Worksheetschemistry Part 2 test Review
Total questions: 70
Worksheet time: 56mins
Put all the following household items in order from lowest to highest pH Lemon Juice, Tums (antacid), Water
lemon juice, water, tums
water, tums, lemon juice
water, lemon juice, tums
tums, water, lemon juice
Which statement describes evidence of a chemical reaction
ice melting
water boiling
lighting a match
grape juice freezing
Which property is an example of a chemical property
ability to burn
ability to melt
ability to dissolve
ability to evaporate
over cleaner is highly caustic chemical that reacts with baked foods. It is dangerous to touch and has a very slippery feel.
what is the likely pH of oven cleaner
4
7
10
5-7
A+B+C ---> D+E
Describe the mass of the reactants and products given the balanced chemical reaction.
the mass of the products is 2/3 that of the reactants
the mass of the reactants equals the mass of the products
the mass of re reactants is less than the mass of the products
the mass of the reactants is greater than the mass of the products.
During science lab, some students added small pieces of magnesium ribbon to 10 mL of hydrochloric acid. They noticed that bubbles formed, the test tube got hot, and the magnesium disappeared.
Which is a sign that a chemical reaction has taken place in this experiment?
Change in odor
change in color
release of heat energy
disappearance of magnesium
Using the Law of Conservation of Matter, determine the number of grams of iron sulfide (FeS) that will be produced in this reaction
112g Fe + 64g S → _____ g FeS
48
64
112
176
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
0
2
4
8
What is the denisty of an object with the volume of 100 mL and 100 G
100g/ml
1g/ml
10g/ml
1000g/ml
What is the density of an object that has a mass of 100 grams and 120 ml
14g/ml
20g/ml
1.2g/ml
.2 g/ml
To determine the density of an empty plastic jug, you would measure
it on a scale
it with a ruler
the mass and volume
the length and volume
Two cups of the same size are filled to the brim with clear liquids. Only one container holds water. The other contains a liquid that has greater density than water. How could you safely identify the container holding the water?
See which cup feels heavier
taste the liquid in both cups
touch the liquids in both cups
add salt to the liquids to see if it dissolves
Which is an example of a chemical reaction
melting ice
rusting iron
water evaporating
rubbing a marker on paper
Freezing point is what type of property
Physical
chemical
Pepsi
Vinegar
Orange Juice
what property do all three of these things have in common
the are all acidic
they all taste bitter
they all have pH above 7
they all turn litmus paper blue
pH
Flammability
Reactivity with other substances
Electronegativity
All of these things are classified as _____ of a substance
nuclear properties
physical properties
chemical properties
reactive properties
Rusting metal is an example of ______ Change
Phase
State
Chemical
Physical
2Na + Cl2 → 2NaCl
Sodium and Chlorine combine to form table salt. Given the chemical reaction, how many grams of 2Na + Cl2 would be required to produce 4 grams of table salt?
2 grams
3 grams
4 grams
8 grams
When determining whether a chemical reaction has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction or chemical change has taken place?
solid melts
heat is given off
substance dissolves
change of shape
Lenny accidentally drops his matchbox car into a graduated cylinder. The car has a mass of 10 grams and the water level in the cylinder rises from 41 ml to 46 ml. Determine the density of the matchbox car. The formula for density is D = m/v.
.5 g/ml
2 g/ml
15 g/ml
50 g/ml
Maria and Miquel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the result of a chemical reaction. Miguel disagreed. What would you tell them to solve this argument?
Is is a change of state, solid to gas, due to the addition of energy
It was a physical reaction since the fuse was lit and heat was produced
The color changes and the release of energy indicate a chemical reaction
It is an endothermic reaction because energy was added, therefore it is a chemical reactions
What two quantities must be known to calculate the density of a sample of matter?
mass and volume
length and mass
size and weight
weight and volume
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
acidic or basic.
What does the Law of Conservation of Matter state?
Matter cannot be gained or lost in a chemical reaction.
Matter can only be lost in a chemical reaction.
Matter can only be gained in a chemical reaction.
Matter can be gained and lost in a chemical reaction.
What is the part of the chemical equation in green called?
Fe + S → FeS
products
reactants
yield
input
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
Reactants
Products
Yields
Output
How many different elements are in C6H12O6?
1
2
3
4
This is used to represent the number of each atom being represented.
A Exponent
The Coefficient
A Molecule
The Subscript
A chemical reaction is balanced when
both sides have the same elements
both sides have the same number of atoms
both sides have the same subscripts
the molecules are the same on each side
Is the following equation balanced or unbalanced?
Fe + S2 → FeS2
balanced
unbalanced
H2 + O2 --> H2O
What is the best way to measure the amount of matter?
mass
volume
weight
density
Students want to gather evidence for the claim that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction. They decide to react vinegar and baking soda in a sealed bag. Which of the following would provide the evidence the students need?
The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction.
Bubbles were produced during the reaction, which meant that a gas was being produced.
The plastic bag did not change in any way, indicating that it was involved in the reaction.
The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.
I Start with M, end with X and have never ending amount of letters. What am I?
Max
Mail Box
Matrix
Mix
What has hundreds of ears but can’t hear?
Caterpillar
Clock
Corn Field
Cell Phone
