Which of the following is a compound?
a. Oxygen
b. Iron
c. Water
d. Air
What is water
100
Fossil fuels are examples of:
a. renewable resources.
b. nonrenewable resources.
What is nonrenewable resources.
100
Conduction involves the movement of heat energy in:
What is direct contact of atoms (touching)
200
Anything that has mass and volume is referred to as:
What is matter
200
Vertical columns on the periodic table represent:
What is groups
200
In the chemical formula for acetic acid, HC2H3O2 , the total number of hydrogen atoms present is:
What is four
200
A solar cell is used to convert ____ energy into electricity.
What is solar
200
Convection involves the movement of heat energy in:
What is liquid and gases
300
The density of a liquid is higher than the density of a gas because:
atoms in a liquid are closer together than atoms in a gas
300
The nonmetal placed on the opposite side of the periodic table from the others is:
What is hydrogen
300
In the chemical formula for carbon dioxide, CO2 , the total number of carbon atoms present is:
What is one
300
Of the following, the element used to fuel nuclear power plants is:
What is uranium.
300
Explain the differences between a homogeneous mixture and a heterogeneous mixture.
A homogeneous mixture is the same throughout.
A heterogeneous mixture may have parts whose characteristics vary widely.
400
A material that conducts electricity will be most likely to be:
What is metal
400
What are the physical properties of nonmetals?
What is dull, brittle, and poor conductor.
400
In the chemical formula for sulfuric acid, H2SO4 , the total number of atoms present in the molecule is:
What is seven
400
Nuclear power has which of the following advantages?
a. Cheap and easy to produce
b. Does not create air pollution
c. Easy to dispose of spent radioactive elements
d. All of the above
What is b. Does not create air pollution
400
Coal, oil, and natural gas are examples of ____ resources.
a. environmental
b. internal
c. external
d. energy
What is
d. energy
500
A 6 cm x 5 cm x 2 cm block has a mass of 180 grams. What is the density of this block?
What is 3g/cm3
500
An example of a metalloid, elements with properties between metals and non-metals, is
What is boron, silicon, germanium, arsenic, antimony, tellurium, polonium.
500
What are the four evidences of a chemical change?
What is bubbling, color change, temperature change, and cloudy.
500
A change to the environment that is harmful to humans and other living things is called:
a. pollution.
b. evolution.
c. conservation.
d. the four seasons.
What is pollution
500
. Which of the following are considered to be Earth’s natural material resources?
a. Air
b. Fresh water
c. Soil
d. All of the above