Font size
Worksheets11.2 Science LT Reviewer
Total questions: 142
Worksheet time: 3hrs 28mins
Chemical (a) is a branch of chemistry that deals with reaction rates and the factors that influence these rates.
What are the factors that affect the rate of a chemical reaction?
temperature
shape
surface area
concentration
color
According to the collision theory, the rate of a chemical reaction is proportional to the number of collisions between the reactant particles.
True
False
Which of the following refers to the amount of substance per unit volume?
Temperature
Concentration
Density
Mass
A catalyst works by ________.
forming the activated complex
increasing the temperature
lowering the activation energy
changing the order of the reaction
If the temperature is reduced, the reaction rate will ______.
stay the same
increase
decrease
Which of the following will lower the rate of a reaction?
decreasing the temperature from 40°C to 10°C
breaking a chunk of calcium up into smaller pieces
increasing the amount of solute dissolved in a solution
adding an enzyme to the reaction
Which of the following will hasten the rate of a reaction?
adding a catalyst
diluting the reactants
decreasing the surface area of a reactant
lowering the temperature of the reaction
What happens during a chemical reaction?
New substances whose properties differ from those of the original materials are formed.
Some atoms disappear while others multiply to form the products.
The atoms of the reactants always stay together to form the products.
New atoms are formed and destroyed to make the products.
Consider the energy diagram of a chemical reaction shown below. At which point of the diagram represents the transition state?
B
A
C
D
What is a branch of chemistry that deals with reaction rates and the factors that influence these rates?
Chemical kinetics
Analytical chemistry
Chemical stoichiometry
Nuclear chemistry
Which of the following would NOT increase the rate of a reaction?
increasing the volume of the container
increasing the temperature
adding a catalyst
raising the surface area of a solid reactant
Between methane gas (CH4) and solid naphthalene (C10H8), which one is easier to burn?
methane gas
solid naphthalene
both have the same rate
How can a catalyst increase the rate of a reaction?
by lowering the activation energy of the overall reaction
by lowering the temperature of the reactants
by decreasing the concentration of the products
by reducing the surface tension of a solid reactant
The reaction of magnesium (Mg) strip with hydrochloric acid (HCl) will proceed faster if _______.
the concentration of HCl is increased
the temperature is decreased
a longer ribbon of Mg is used
a weaker acid such as acetic acid is added
During a chemical reaction, a substance is neither consumed nor changed; it is only used and then regenerated. What do you call this substance?
catalyst
reactant
product
reagent
Refer to the energy diagram below to answer the following questions. Assume that the graph shows the range of energies of the collision of the reactants at two different temperatures.
How do you describe the two temperatures?
T2 > T1
T2 = T1
T1 < T1
Refer to the energy diagram below to answer the following questions. Assume that the graph shows the range of energies of the collision of the reactants at two different temperatures.
Which of the curves has the greatest number of collisions to pass over the activation energy?
T2
T1
Which of the following describes the concept of the collision theory?
All of the choices
Reactant particles must collide with proper orientation.
Reactant particles must collide in order to react.
Reactant particles must possess sufficient energy to initiate the reaction.
Surface area refers to the sum of the exposed regions of a solid substance. How does this affect the rate of a chemical reaction?
The larger the surface area of a solid reactant, the faster the rate of a chemical reaction.
An increase in the surface area enables less particles of a solid to react.
The lower the surface area of a solid reactant, the faster the rate of a chemical reaction.
Decreasing the surface area gives a faster reaction because more particles are ‘exposed’ to the other reactant.
Which of the following dissolves more quickly in the water?
1 gram of small particles of salt
1 gram block of salt
Which one will dissolve the slowest?
sugar cubes in cold water
powdered sugar in hot water
powdered sugar in cold water
sugar cubes in hot water
Consider the reaction of 2 g of zinc metal (Zn) and 25 mL of 1.0 M hydrochloric acid (HCl) at 25⁰C.
Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)
Predict the effect of the following conditions on the reaction rate.
Smaller pieces of zinc were used.
faster
slower
Consider the reaction of 2 g of zinc metal (Zn) and 25 mL of 1.0 M hydrochloric acid (HCl) at 25⁰C.
Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)
Predict the effect of the following conditions on the reaction rate.
0.5 M HCl was used instead of 1.0 M.
faster
slower
Consider the reaction of 2 g of zinc metal (Zn) and 25 mL of 1.0 M hydrochloric acid (HCl) at 25⁰C.
Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)
Predict the effect of the following conditions on the reaction rate.
10 mL was added to 25 mL of 1.0 M HCl.
faster
slower
Consider the reaction of 2 g of zinc metal (Zn) and 25 mL of 1.0 M hydrochloric acid (HCl) at 25⁰C.
Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)
Predict the effect of the following conditions on the reaction rate.
2 grams of zinc metal powder was used instead of 2 grams of zinc metal blocks.
faster
slower
Consider the reaction of 2 g of zinc metal (Zn) and 25 mL of 1.0 M hydrochloric acid (HCl) at 25⁰C.
Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)
Predict the effect of the following conditions on the reaction rate.
The reaction was carried out at 30⁰C instead of 25⁰C.
faster
slower
Determine the molar mass of ammonium oxalate, (NH4)2C2O4.
(a) g/mol
Determine the molar mass of Acetic acid, C2H4O2
(a) g/mol
Determine the molar mass of Sodium carbonate, Na2CO3
(a) g/mol
Determine the molar mass of Potassium permanganate, KMnO4
(a) g/mol
Determine the molar mass of Barium nitrate, Ba(NO3)2
(a) g/mol
A careless student did not wait until his NaCl was dry before he weighed it. As a result, his product weighed 2.25 g when it should have been 1.75 g. What was his percent yield?
Answer: (a) %
When I was a freshman in college, we had a lab where we were supposed to isolate caffeine from tea leaves. Most of my caffeine was washed down the drain in a freak accident. Although I should have had 5.0 g of caffeine, I only ended up with 0.040 g of caffeine and a bad grade in the lab. What was my percent yield?
Answer: (a) %
A chemist was supposed to produce 75.0 g of aspirin. However, he squandered some of the reactants for his own personal use (he was later fired), and so only actually made 50.0 g. What was his percent yield?
Answer: (a) %
Stoichiometry came from the Greek words _______ (meaning "element") and ________ (meaning "measure")
(a)
Answer the following questions about the reaction of 78.0 g of CH4 with 102 g of O2.
CH4 (g) + 2O2 (g) ⟶ 2H2O (l) + CO2 (g)
Which is the limiting reactant?
(a)
Answer the following questions about the reaction of 78.0 g of CH4 with 102 g of O2.
CH4 (g) + 2O2 (g) ⟶ 2H2O (l) + CO2 (g)
How much CO2 in grams is formed (theoretical yield)?
Answer: (a) g CO2
Answer the following questions about the reaction of 78.0 g of CH4 with 102 g of O2.
CH4 (g) + 2O2 (g) ⟶ 2H2O (l) + CO2 (g)
How much of the excess reactant is left unconsumed?
(a)
Answer the following questions about the reaction of 78.0 g of CH4 with 102 g of O2.
CH4 (g) + 2O2 (g) ⟶ 2H2O (l) + CO2 (g)
What is the percent yield of the reaction if 67.0 g of CO2 is experimentally obtained?
(a)
Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:
4NH3 + 5O2 ⟶ 6H2O + 4NO
How many moles of H2O can be made using 1.90 mol NH3?
Answer: (a) mol H2O
Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:
4NH3 + 5O2 ⟶ 6H2O + 4NO
What mass of NH3 is needed to make 0.760 mol NO?
Answer: (a) g NH3
Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:
4NH3 + 5O2 ⟶ 6H2O + 4NO
How many moles of H2O will be produced by the reaction of 355 g of O2?
Answer: (a) mol H2O
Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:
4NH3 + 5O2 ⟶ 6H2O + 4NO
How many grams of NO can be made from 48.0 g of NH3?
Answer: (a) g NO
When copper is heated with an excess of sulfur, copper(I) sulfide is formed. In a given experiment, 1.50 g copper was heated with excess sulfur to yield 1.76 g copper(I) sulfide.
2Cu + S ⟶ Cu2S
What is the Percent Yield?
(a)
Identify whether the example is an endothermic or exothermic reaction.
A candle flame
exothermic
endothermic
Identify whether the example is an endothermic or exothermic reaction.
Baking cookies
exothermic
endothermic
Identify whether the example is an endothermic or exothermic reaction.
Burning sugar
exothermic
endothermic
Identify whether the example is an endothermic or exothermic reaction.
Melting ice
exothermic
endothermic
Identify whether the example is an endothermic or exothermic reaction.
Freezing water
exothermic
endothermic
Which of the following deals with the transformation of energy involved in a chemical reaction?
Chemical Thermodynamics
Chemical Kinetics
If a reaction is exothermic, ______________.
more energy is required to break the bonds in the reactants than is released when the products are formed
the temperature goes down
more energy is released when the bonds in the products are formed than is used to break the bonds in the reactants
the change in enthalpy is a positive value
A. System is a quantity of matter or a region in space chosen for study.
B. Surrounding is the mass or region outside the system.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. The universe refers to the imaginary or real surface that separates the system from its surroundings.
B. The system plus its surrounding is called the boundary.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. The second law of thermodynamics states that energy is conserved.
B. Energy may change its form, but the total amount remains the same.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. Combustion is a reaction in which a substance reacts with oxygen to produce energy.
B. It is always an endothermic reaction.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. In an endothermic reaction, the energy of the reactants is greater than the energy of the products.
B. As a result, the net enthalpy change is positive, heat is released.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. Energy is the capacity to do work or to produce heat.
B. It can be kinetic energy (stored energy) or potential energy (energy in motion).
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
Identify whether the example is an endothermic or exothermic reaction.
Fireworks
exothermic
endothermic
Identify whether the example is an endothermic or exothermic reaction.
Toothpaste neutralizing mouth acid from bacteria
exothermic
endothermic
Identify whether the example is an endothermic or exothermic reaction.
A solid burns brightly and releases heat, light, and sound.
exothermic
endothermic
What percentage of our energy use comes from fossil fuels? Refer to the diagram below.
86%
14%
61%
95%
Some power plants pump water down deep holes into hot rock. The hot rock heats the water, which turns the water into steam. The steam rushes back to Earth’s surface and is used to make electricity. This plant is generating which alternative energy resource?
Geothermal energy
Solar energy
Wind energy
Hydroelectric energy
Most forms of renewable energy produce a small amount of pollution from the generators that help to produce electricity. Which form of energy below does not use a turbine and generator for electricity?
Solar energy
Solar energy
Geothermal energy
Hydroelectric energy
All of the following statements are true about nuclear power except _____.
large amounts of energy can be produced from small amounts of uranium
nuclear power is produced from the fission of uranium atoms
nuclear power emits significant amounts of greenhouse gases
nuclear waste poses significant threats to human health and the environment
Nuclear power plants use the element ____________ as fuel, a clean and efficient way to drive turbine generators.
Mercury
Uranium
Einsteinium
Polonium
_____________ power is the energy generated through the use of running water in order to spin a turbine generator.
Wind
Hydroelectric
Geothermal
Petroleum
Why is developing renewable energy important to life on Earth?
Renewable energy sources can be easily replenished because there are infinite sources.
Renewable energy produces less pollution.
All of the choices.
Other energy sources will be used up and gone forever.
________________ are plants grown and then used to create energy. The plants are typically burned to make electricity, but certain plants can also make fuels such as ethanol or biodiesel.
Biomass
Natural gas
Petroleum
Coal
The world faces an energy crisis because _________.
world oil production will peak and begin to decline
shortages and the resulting escalation of prices can shock the economic and political order
world demand for energy will increase
All of the choices
Coal is classified into four main types, or ranks: anthracite, bituminous, sub-bituminous, and lignite. Which of the following describes anthracite coal?
It has the highest moisture content.
It is the softest type of coal.
It has the highest carbon/energy content.
It is a low rank coal.
What is the advantage of using hydropower as an energy source?
may divert water and alter normal water flow
sometimes causes flooding in surrounding areas
might disrupt the movements of animals
uses existing bodies of water
Daily choices that humans make affect the environment. Sometimes, our lifestyles can harm the environment. For example, fossil fuel power plants generate waste in the form of air emissions, thermal releases, and climatic impacts. Which of the following statements would be most helpful in protecting the environment from fossil fuel power plants?
Buying fewer mass produced products
Buying paper products made from harvested trees
Using natural gas as a fuel source instead of petroleum
Using solar power to generate electricity
Scientists are currently researching new ways to obtain energy from our natural, renewable resources. Which statement gives the best explanation of the benefits of renewable resources?
Renewable resources are nonrenewable and expensive to produce.
Renewable resources are versatile and emit various amounts of pollution.
Renewable resources are natural, but cause destruction of land surrounding production.
Renewable resources produce clean energy, meaning less pollution and greenhouse gas emissions.
What chemical is added to natural gas so that people can tell if there is a gas leak?
Ethyl mercaptan
Aluminum zirconium
Methylene chloride
Cinnamaldehyde
Why is it helpful to use natural gas even though it's nonrenewable?
It releases less pollution than any other fossil fuels.
We have an endless supply.
There is a limited supply.
It takes a while to make.
What is the disadvantage of using coal as an energy source?
There is lots of it everywhere.
Mining can destroy landscapes, forests, and wildlife habitats that are near the sites.
It releases radiation as a byproduct.
It is inexpensive.
The word 'petroleum' comes from the Latin roots of petra, meaning “rock” and oleum meaning “gas”.
True
False
Wind energy is caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and the rotation of the earth.
True
False
Which of the following statements is an advantage of wind power?
It is a nonrenewable energy resource.
It emits greenhouse gases.
It is free and abundant.
It reduces noise pollution.
Which of the following is not a biomass energy source?
agricultural residues
wood
animal waste
glass and plastic
Which of the following does not describe geothermal energy?
Geothermal energy is a renewable resource as long as the Earth exists.
Geothermal energy has high initial capital costs.
Geothermal energy is the heat from the Earth's atmosphere.
Geothermal energy runs the risk of triggering earthquakes.
In hydroelectric power, what is necessary for the production of power throughout the year?
High amount of air
Dams filled with water
High intense sunlight
Nuclear power
Which of the following is a disadvantage of solar energy?
It reduces electricity bills.
It causes noise pollution.
It is weather-dependent causing its efficiency to drop.
It requires a lot of maintenance.
It is defined as the mass of one mole of atoms, molecules, or formula units of a substance.
molar mass
Avogadro's number
mole
stoichiometry
The subscripts in chemical formulas cannot be changed in balancing an equation.
True
False
The final equation should have the largest whole number ratio of coefficients.
True
False
Hydroelectric Energy
electricity generated using the energy of moving water
biological material derived from living or recently living organisms
heat energy from deep within the earth
energy that is directly collected from sunlight
form of solar energy that is produced by the movement of air relative to the earth's surface
Biomass Energy
electricity generated using the energy of moving water
biological material derived from living or recently living organisms
heat energy from deep within the earth
energy that is directly collected from sunlight
form of solar energy that is produced by the movement of air relative to the earth's surface
Geothermal Energy
electricity generated using the energy of moving water
biological material derived from living or recently living organisms
heat energy from deep within the earth
energy that is directly collected from sunlight
form of solar energy that is produced by the movement of air relative to the earth's surface
Solar Energy
electricity generated using the energy of moving water
biological material derived from living or recently living organisms
heat energy from deep within the earth
energy that is directly collected from sunlight
form of solar energy that is produced by the movement of air relative to the earth's surface
Wind Energy
electricity generated using the energy of moving water
biological material derived from living or recently living organisms
heat energy from deep within the earth
energy that is directly collected from sunlight
form of solar energy that is produced by the movement of air relative to the earth's surface
Coal
a sedimentary rock composed predominantly of solid organic materials with a greater or lesser proportion of mineral matter
dark liquid fossil fuel formed by hydrocarbons
colorless, shapeless,and odorless in its pure form
uses the element uranium as a fuel; a clean and efficient way to drive turbine generators
Oil/Petroleum
a sedimentary rock composed predominantly of solid organic materials with a greater or lesser proportion of mineral matter
dark liquid fossil fuel formed by hydrocarbons
colorless, shapeless,and odorless in its pure form
uses the element uranium as a fuel; a clean and efficient way to drive turbine generators
Natural Gas
a sedimentary rock composed predominantly of solid organic materials with a greater or lesser proportion of mineral matter
dark liquid fossil fuel formed by hydrocarbons
colorless, shapeless,and odorless in its pure form
uses the element uranium as a fuel; a clean and efficient way to drive turbine generators
Nuclear Energy
a sedimentary rock composed predominantly of solid organic materials with a greater or lesser proportion of mineral matter
dark liquid fossil fuel formed by hydrocarbons
colorless, shapeless,and odorless in its pure form
uses the element uranium as a fuel; a clean and efficient way to drive turbine generators
How do coal and charcoal differ from each other?
Charcoal is a mineral, and coal is not.
Coal is a renewable natural resources, while charcoal is a nonrenewable energy source.
Coal is naturally resulting fossil fuel whereas charcoal is produced by slow burning of carbon woods.
It takes over millions of years to produce charcoal, whereas coal can be produced easily.
Which of the following is not an example of fossil fuels?
coal
oil
natural gas
biogas
Why is nuclear energy classify as a nonrenewable resource?
because it cannot be replenished easily
all of the choices
because uranium and similar fuel sources are infinite
because it can be replaced or restored
The following are some of the common uses of petroleum except ____________.
transportation fuels
fuel oils for heating and electricity generation
alcohol fuels like ethanol or biodiesel
personal care products as a moisturizing agent
Nuclear power plants use the heat produced during nuclear fusion to heat water. In nuclear fusion, atoms are split apart to form smaller atoms, releasing energy.
True
False
LPG (propane) and natural gas (methane) are odorless in their natural state. An odourant called Ethyl Mercaptan is added to these gases to make it easier to detect a leak.
True
False
It is a synthetic, water-soluble cleaning agent with wetting and emulsifying properties.
Soap
Detergent
Disinfectant
Muriatic Acid
It is an industrial-grade or concentrated hydrochloric acid, and is used to remove heavy dirt.
Soap
Detergent
Disinfectant
Muriatic Acid
It can rapidly inactivate or destroy various types of microorganisms on surfaces of nonliving objects.
Soap
Detergent
Disinfectant
Muriatic Acid
It is a salt composed of sodium or potassium ions paired with long hydrocarbon chain fatty acids, which are prepared from vegetable oils or animal fats.
Soap
Detergent
Disinfectant
Muriatic Acid
Muriatic acid can remove dirt and grime from toilets and sinks because ___________.
it can be rinsed off with water
it is a strong acid and can dissolve mineral buildup
it is a nonpolar compound soluble in grease and oil
it is a weak acid and can react with water
Acid
Using disinfectants, what are the main mechanisms to inactivate microorganisms?
I – Kill the microbes directly.
II – Reduce germs but do not kill them.
III– Make the environment unsuitable for them to thrive.
I, II, & III
II & III
I & II
I & III
Why is the cleansing action of detergent better than soap?
because it is prepared from fats and oils
because it contains insoluble sodium or potassium salts of weak acids
because it is not inactivated by hard water
because it is a natural, water-insoluble cleaning agent
Aside from lime buildup, what else causes the presence of stains and the inability to completely remove them through ordinary cleaning agents?
hard water
soft water
Sorbitol is one of the inactive ingredients of soap. What does it add to the product?
It makes the soap opaque and whiter.
It makes the scents and dyes blend evenly with the soap.
It makes the soap more transparent.
It makes bar soaps stay hard and resist shaping in the water.
Why do cosmetics manufacturing companies use tetrasodium EDTA?
because of its whitening effect
because of its chelating property
because it makes soft water hard
because it allows moisture in the skin from escaping
Vitamin E or tocopherol is the most common antioxidant used in the cosmetic industry. Which of the following does not describe this ingredient?
It has anti-inflammatory properties.
It is polar and is fat-insoluble.
It protects the skin from free radicals.
It helps reduce dryness of the skin.
Emulsion
mixture of 2 immiscible liquids, with one present as droplets of microscopic size and distributed throughout the other liquid
added in blushes and lipstick to increase their hardness
added to dilute or homogeneously disperse other components in cosmetics
a group of drugs that fight fungi, bacteria, viruses, and protozoans
added to prevent the deterioration of cosmetic products
Waxes and thickeners
mixture of 2 immiscible liquids, with one present as droplets of microscopic size and distributed throughout the other liquid
added in blushes and lipstick to increase their hardness
added to dilute or homogeneously disperse other components in cosmetics
a group of drugs that fight fungi, bacteria, viruses, and protozoans
added to prevent the deterioration of cosmetic products
Solvents
mixture of 2 immiscible liquids, with one present as droplets of microscopic size and distributed throughout the other liquid
added in blushes and lipstick to increase their hardness
added to dilute or homogeneously disperse other components in cosmetics
a group of drugs that fight fungi, bacteria, viruses, and protozoans
added to prevent the deterioration of cosmetic products
Antimicrobials
mixture of 2 immiscible liquids, with one present as droplets of microscopic size and distributed throughout the other liquid
added in blushes and lipstick to increase their hardness
added to dilute or homogeneously disperse other components in cosmetics
a group of drugs that fight fungi, bacteria, viruses, and protozoans
added to prevent the deterioration of cosmetic products
Antioxidants and preservatives
mixture of 2 immiscible liquids, with one present as droplets of microscopic size and distributed throughout the other liquid
added in blushes and lipstick to increase their hardness
added to dilute or homogeneously disperse other components in cosmetics
a group of drugs that fight fungi, bacteria, viruses, and protozoans
added to prevent the deterioration of cosmetic products
A. Surfactants, which are the most essential components of a detergent, have two ends — a nonpolar head and a polar tail.
B. The head likes oil and hates water, while the tail likes water and hates oil.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. Moisture is defined as the dryness one feels as vapor in the environment or as a condensed liquid on the surface of some objects.
B. Panthenol, which functions as a hair conditioner, is an example of a commonly used ingredient in moisturizers.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. pH adjusters are ingredients that stabilize other substances in a product by adjusting the pH.
B. Any acid or base can alter the pH.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
A. Manufacturers use color additives to make their products more attractive and even informative.
B. D&C red #7 calcium lake is an example of an inorganic pigment, and iron oxides and mica for synthetic organic colors.
A & B are true
A is true, but B is false
A is false, but B is true
A & B are false
Chemicals, synthetic or not, have both desirable and undesirable properties that must be considered when choosing cosmetics and cleaning materials. Which of the following properties of chemical ingredients must be considered carefully before buying commercial products?
acidity or basicity
All of the choices
dehydrating property
toxicity
The cleansing action of soap is stronger than detergents.
True
False
The two main mechanisms to inactivate microorganisms using disinfectants are to kill the microbes directly and to make the environment unsuitable for them to thrive.
True
False
Surfactants, which are the most essential components of a detergent, have two ends – a polar head and a nonpolar tail.
True
False
The word “muriatic acid” came from the Latin word muriaticus which means “brine” or “sugar”.
True
False
Which of the following describes an inert or inactive ingredient?
It affects the action of the active ingredient.
It is the component of a product which directly enables it to serve its purpose.
It carries out or alters the function of the active ingredient.
It is only added for stability, compatibility, and desirability.
To determine the active ingredient, know first the intended purpose of the commercial product. Which of the following is a possible active ingredient of antibacterial soap?
paraben
beeswax
hydrochloric acid
triclosan
What is an active ingredient in detergent?
sodium lauryl sulfate
triclocarban
hydrochloric acid
alcohol
What is an active ingredient in Soap?
sodium lauryl sulfate
triclocarban
hydrochloric acid
alcohol
What is an active ingredient in Muriatic Acid?
sodium lauryl sulfate
triclocarban
hydrochloric acid
alcohol
What is an active ingredient in Disinfectant?
sodium lauryl sulfate
triclocarban
hydrochloric acid
alcohol
Which of the following is false about cosmetic products?
They are applied to the face and body.
They aim to enhance a person’s appearance and odor.
They are not used to treat skin diseases.
They have active ingredients.
In general, moisturizers serve as barriers that prevent moisture in the skin from escaping. Which of the following ingredients does NOT function as a skin conditioner?
Lanolin, lanolin alcohols, and oil
Propylparaben and butylparaben
Stearic acid and stearyl alcohol
Dimethicone silicone
Some cosmetic companies include antimicrobials in their products. Which one best describes antimicrobials?
A range of powerful drugs that are used to treat diseases caused by fungi.
A group of drugs that fight fungi, bacteria, viruses, and protozoans.
A range of powerful drugs that can treat viral infections.
A group of drugs that fight only spores.
Which of the following ingredients is added to prevent the deterioration of cosmetic products?
color additives
moisturizers
antioxidants and preservatives
pH adjusters
Moisture is defined as the (a) one feels as vapor in the environment or as a condensed liquid on the surface of some objects.
Waxes and thickeners are ingredients added in blushes and lipsticks to increase their (a) and prevent them from melting at higher temperatures.
Solvents are added to dilute or _____ disperse other components in cosmetics.
heterogeneously
homogeneously
______ is a mixture of two immiscible liquids, with one present as droplets of microscopic size and distributed throughout the other liquid.
emulsion
emollience
Vitamin _____ or tocopherol is the most common antioxidant used in the cosmetic industry.
E
A
C
K
