Density
What is the formula for calculating density?
B) Mass ÷ Volume
What are particles?
a) Large pieces of matter
b) Tiny pieces of matter
c) Only found in liquids
b) Tiny pieces of matter
What is the process called when a solid changes directly into a gas?
a. Condensation
b. Vaporization
c. Sublimation
c. Sublimation
Which of the following is a heterogeneous mixture?
a) Air
b) Salt water
c) Chocolate chip cookies
d) Lemonade
c) Chocolate chip cookies
An object has a mass of 35g and a volume of 30cm³. Will it sink or float in water?
a) Sink
b) Float
c) Stay suspended in the middle
d) Not enough information
Sink
Mass: 24 grams, Volume: 8 cm³
Density: __________ g/cm³
3 g/cm³
Which of these is NOT a main type of particle motion?
a) Vibration
b) Rotation
c) Evaporation
c) Evaporation
In which state of matter do particles move the fastest?
a. Solid
b. Liquid
c. Plasma
c. Plasma
In a solution, the substance that dissolves is called the:
a) Solvent
b) Solute
c) Mixture
d) Homogeneous
b) Solute
A cube has volume of 27cm³ and a mass of 24g. What will it do in water?
a) Sink
b) Float
c) Stay suspended in the middle
Float
Mass: 15 grams, Volume: 3 cm³
Density: __________ g/cm³
5 g/cm³
What are the four main states of matter?
a) Solid, liquid, gas, rock
b) Solid, liquid, gas, plasma
c) Solid, liquid, vapor, plasma
b) Solid, liquid, gas, plasma
What is the process called when a liquid changes into a solid?
a. Deposition
b. Sublimation
c. Freezing
c. Freezing
What factor can increase the rate of dissolving?
a) Cooling
b) Stirring
c) Adding solute
d) Decreasing solvent
b) Stirring
What is Buoyancy?
a) the ability of an object to float
b) the ability of an object to bounce
a) the ability of an object to float
Mass: 40 grams, Volume: 50 mL
Density: __________ g/cm³
0.8 g/cm³
Gas particles are characterized by:
a) Being tightly packed
b) Having a fixed shape
c) Moving freely and being far apart
c) Moving freely and being far apart
Which of the following is NOT a characteristic of liquids?
a. They take the shape of their container
b. They have a definite volume
c. They have a fixed shape
c. They have a fixed shape
What happens when a solution becomes saturated?
a) More solute dissolves
b) Solute settles at the top
c) No more solute can dissolve
d) It becomes a pure substance
c) No more solute can dissolve
An object with a density less than 1 g/cm³ will float on water.
a) True
b) False
a) True
Mass: 18 grams, Volume: 6 cm³
Density: __________ g/cm³
3 g/cm³
Which of the following is an example of plasma?
a) Ice
b) Oil
c) Lightning
c) Lightning
What happens to particles when temperature increases?
a. They slow down
b. They stop moving
c. They move faster
c. They move faster
_________________________ means "different throughout."
a) Homogeneous
b) Heterogenous
b) Heterogenous
Which of the following is an example of a floating object?
a) A rock in water
b) An anchor in the ocean
c) A hot air balloon in air
c) A hot air balloon in air