The amount of matter in an object-------
a. volume
b. length
c. density
d. mass
d. MASS
100
A substance made of only one kind of atom -----
a. electron
b. water
c. element
d. compound
c. ELEMENT
100
Particles of this phase do not have a definite volume or a definite shape, but fill whatever container they are put in------
a. solid
b. liquid
c. gas
d. water
c. GAS
100
One milliliter of water has a density of 1g/mL. The density of 100 milliliters of water is......................
a. 100 g/mL
b. 1 g/mL
c. 101 g/mL
b. 1 g/mL
100
Oil floats on water because ..............
a. water is less dense
b. they don't mix
c. oil is less dense
d. they have the same density
c. OIL IS LESS DENSE
200
The amount of matter in a certain space --------
a. volume
b. density
c. length
d. mass
b. DENSITY
200
Formed when two or more atoms join together ------
a. atom
b. nucleus
c. proton
d. molecule
d. MOLECULE
200
Particles move faster when ________________________ is added -------
a. salt
b. ice
c. food coloring
d. heat energy
d. HEAT ENERGY
200
A graduated cylinder has 100 mL of water in it. A rock is dropped into it and the water level rises to 120 mL. The mass of the rock is 40 grams. The density of the rock is .....
a. 2 grams per cubic centimeter
b. 0.3 grams per cubic centimeter
c. 0.5 grams per cubic centimeter
a. 2 grams per cubic centimeter
200
Food coloring spreads out faster in hot water than cold water because the molecules are _______ ------
a. moving slower in hot water
b. moving faster in cold water
c. moving faster in hot water
d. moving the same speed because they are both water
c. MOVING FASTER IN HOT WATER
300
The volume of a square chunk of plastic with a length of 2 cm, width of 2 centimeters, and a height of 2 centimeters --------------
a. 6 centimeters cubed
b. 1 centimeter cubed
c. 8 centimeters cubed
c. 8 CENTIMETERS CUBED
300
The density of a liquid that has a volume of 5 mL and a mass of 25 grams.......
a. 5 g/mL
b. 75 g/mL
c. 0.2 g/mL
d. 30 g/mL
a. 5 g/mL
300
If enough heat energy is added to a solid, the particles move faster and break away from one another and the substance can turn into a .....
a. liquid
b. solid
c. a new substance
a. LIQUID
300
If 50 mL of water is heated but does not boil, the following is true------------
a. the water will decrease in volume
b. the water will increase in volume
c. the water will stay the same volume
b. THE WATER WILL INCREASE IN VOLUME
300
Molecules that are cooled down will slow down and ......
a. contract
b. stop moving
c. expand
d. increase the pressure
a. CONTRACT
400
A tool used to measure mass ------
a. graduated cylinder
b. triple beam balance
c. beaker
d. microscope
b. TRIPLE BEAM BALANCE
400
The kind of atoms that a pure chunk of gold is made of ----
a. protons
b. electrons
c. gold atoms
d. water atoms
c. GOLD ATOMS
400
Because it has _____________________ than air, a balloon filled with helium will rise in the air.--------------
a. a greater density
b. a lower density
c. the same density
b. a lower density
400
Because it is __________________________, cold air will sink. ---------
a. less dense
b. more dense
c. lighter
b. MORE DENSE
400
The movement of molecules from an area of high concentration to an area of low concentration, such as perfume molecules spreading throughout a room is_____----
a. contraction
b. diffusion
c. nuclear
d. impossible
b. DIFFUSION
500
The amount of space an object takes up is its ------
a. volume
b. mass
c. circumference
d. density
a. VOLUME
500
The compound "water" is made of ...
a. water molecules
b. atoms of water
c. water elements
d. water cells
a. WATER MOLECULES
500
Of corn syrup, motor oil, and water, this one is more dense -------
a. corn syrup
b. motor oil
c. water
a. CORN SYRUP
500
A candy bar is 10 cm X 2 cm X 4 cm. It has a mass of 160 grams and a density of 2 grams per cubic centimeter. You eat 1/2 of the candy bar. It now has a density of --------
a. 1 gram per cubic centimeter
b. 2 grams per cubic centimeter
c. 4 grams per cubic centimeter
b. 2 GRAMS PER CUBIC CENTIMETER
500
A balloon that is heated up and expands now has __________________ density than it had before it was heated.
a. the same
b. an increased (greater)
c. a decreased (lower)
d. no