WorksheetsNC Check In Practice Physical Science
Total questions: 48
Worksheet time: 27mins
A substance composed of atoms of the same type is classified as a(n)
element
compound
mixture
solution
All elements in Group 1 on the periodic table are...
reactive nonmetals
reactive metals
noble gases
nonreactive gases
A piece of metal is cut and placed into a liquid where it immediately started to bubble until the piece of metal was no longer visible in the liquid. What most likely took place?
The metal was chemically changed when it was cut and placed in the liquid.
The metal was chemically changed when it was cut and placed in the liquid.
The metal was physically changed when it was cut and chemically changed when it was placed in the liquid.
The metal was chemically changed when it was cut and physically changed when it was placed in the liquid.
When two liquids are stirred together and then separate after being left alone, this is an example of...
an element
a compound
a heterogeneous mixture
a solution
How do you use the periodic table to determine which elements have similar chemical properties?
Look for elements in the same horizontal rows.
Look for elements in the same vertical columns.
Which describes the difference between physical and chemical changes?
Physical changes are permanent, while chemical changes are not.
Physical changes do not change the mass, but chemical changes do change the mass.
Physical changes do not form new substances, whereas chemical changes form new substances.
If the product of a chemical reaction between Substance 1 and Substance 2 has a mass of 55 grams, and the mass of Substance 1 in the reactant is 34 grams, what is the starting mass of Substance 2?
89 grams because some of the mass was lost in the reaction.
21 grams because the mass of the reactant equals the mass of the product.
100 grams because mass is gained after the chemical reaction.
An apple is cut in half. The two halves begin to turn brown after being exposed to the air. Which choice best compares these two observations?
Cutting and turning brown are both physical changes.
Cutting is a physical change and turning brown is a chemical change.
Cutting and turning brown are both chemical changes.
Cutting is a chemical change and turning brown is a physical change.
If a reactant in a chemical reaction contains 5 atoms of hydrogen, 2 atoms of chlorine, and 6 atoms of oxygen, how many hydrogen atoms will be in the product?
4
6
5
7
How would a drought impact a hydroelectric dam's ability to produce electricity?
The drought will increase the ability to produce electricity.
The drought will have no impact on the energy produced by the dam.
The drought will reduce the dam's ability to produce electricity.
How can drilling into the land to obtain natural gas affect the environment?
Drilling could be beneficial for the local aquifer as more water will be able to soak into the ground.
The pipeline needed to transport the natural gas could interfere with bird migratory patterns.
The noise produced by the drilling machinery could disrupt local wildlife.
According to the law of conservation of mass, the mass of a chemical reaction remains the same before and after the reaction. Why does the mass of baking soda and vinegar decrease when they react in an open container?
Some of the mass was converted to heat.
Some of the mass escaped into the atmosphere as a gas during the reaction.
Water in a river contains dissolved minerals and gases. How can the water be described?
A homogeneous mixture (solution)
A heterogeneous mixture
An element
A compound
As the prices for fossil fuels such as coal and oil rise, what could be an effect on renewable energy?
The cost of land for renewable energy resources decreases.
The demand for renewable energy will increase.
What impact does removing soil during the mining process have on the environment?
The rate of erosion decreases.
Carbon dioxide is added to the atmosphere.
The rate of erosion increases.
There is no impact.
As the prices for fossil fuels such as coal and oil rise, what could be an effect on renewable energy?
The cost for renewable energy will decrease.
The demand for renewable energy will increase.
The need for renewable energy would remain constant.
The cost of land for renewable energy resources will decrease.
What impact does cutting down trees (deforestation) have on the environment?
Less trees result in more carbon dioxide in the atmosphere because trees naturally remove CO2 from the atmosphere.
Less trees result in less carbon dioxide in the atmosphere.
What does the atomic number represent?
Protons
Electrons
Mass
Neutrons
Nucleus
metalloids
characteristics of both metals and nonmetals
metals
generally shiny, malleable, ductile, and good conductors of heat and electricity
nonmetals
generally dull, brittle, and poor conductors of heat and electricity
groups/family
vertical columns on the Periodic Table that contain elements with similar properties
period
the horizontal rows of elements on the Periodic Table
Identify which are the products and reactants
The Law of Conservation of Mass states that:
Compounds and elements are the same.
Elements can be destroyed.
Matter cannot be created or destroyed, but can be transformed.
Mass is the same for all the objects if they need to exist.
Identify the type of this change.
Chemical reaction
Physical change
Musical change
Ice Ice baby
How does a chemical change differ from a physical change?
There is no difference.
A physical change creates a new substance.
A chemical change creates a new substance.
Is burning wood a chemical or physical change?
Chemical
Physical
Is glass breaking a chemical or physical change?
chemical
physical
A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?
Physical change
Chemical change
No change
Elements in the same column (also called a group or family) on the periodic table have:
Similar chemical and physical properties
Similar chemical properties
How are elements ordered in the modern periodic table?
By date of discovery
By decreasing atomic mass
By increasing atomic number
By alphabetical order of element symbols
The periodic table contains rows and columns. What are the horizontal rows called?
Groups
Families
Columns
Periods
Which of the following is an example of evidence for a chemical reaction?
Change in size
Change in shape
Change in state
Formation of a gas
When a chemical reaction occurs, which of the following is a possible evidence?
Change in temperature
Change in color
Formation of a precipitate
All of the above
