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28 questions
Number 2 represents a ________
solid
liquid
gas
plasma
Particles in a _________ take the shape of the container.
solid
liquid
gas
plasma
As particles are exposed to warmer temperatures they __________
move faster
slow down
stay the same
vibrate on its spot
A student added sugar to a cup of water and stirred with a spoon. After 10 minutes you could not see the sugar anymore. What happened to the sugar?
the sugar evaporated
the sugar dissolved
the sugar disappeared
the sugar reacted with water making a new substance
Gases have no fixed volume.
False
True
Which of the following sentences are true about solids?
Solids are rigid, have a fixed shape but not a fixed volume
Solids are not rigid, have a fixed shape and no fixed volume
Solids are rigid, have a fixed shape and a fixed volume
All mater is made up of
Water
mixtures
particles
blocks
The particles can move around but stay close to other particles. Which state of matter is described?
A solid
A liquid
A gas
A solution
The particles move very fast and expand to fill the container they are in. Which state of matter is described?
Gas
Liquid
Solid
Air
If we dissolve salt into water what is the solute?
Salt
Water
The characteristic temperature at which a pure solid changes to a liquid is its __________ point.
melting
boiling
condensing
pressure
What happens when the particles in a gas lose enough thermal energy to form a liquid?
condensation
vaporization
sublimation
freezing
What happens when particles of a solid do not pass through the liquid state as they form a gas?
sublimation
freezing
vaporization
condensation
Solids can be compressed
TRUE
FALSE
When a substance in the solid or liquid state cools, its particles move more slowly and get closer together. What happens to the sample substance?
It contracts.
It expands.
It dissolves.
It stays the same.
The boiling point of a substance depends on the strength of the forces between the particles in the liquid state. Which statement is in agreement with this idea?
The stronger the forces, the lower the boiling point.
The weaker the forces, the higher the boiling point.
The stronger the forces, the higher the boiling point.
The weaker the forces, the more energy is needed to separate the particles.
The boiling point of copper is 2595oC and the boiling point of gold is 2970oC. Which substance has stronger forces between its particles in the liquid state?
copper
gold
neither
Which process is illustrated in this figure?
evaporating
chemical reaction
boiling
dissolving
The mass of a solid that dissolves in 100 g of water.
mass
solubility
density
conductivity
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