Liquids
Solids
Gases
General
Labs
100
Water drops stay together on wax paper and don't break apart easily because?
Water molecules are attached to each other.
100
Why do bridges have metal connectors in the road?
To allow the bridge to expand in the summer months when the solid particles are moving fast and spreading apart and when the bridge retracts in the colder months when the particles of the solid are slowing down and getting closer togther.
100
When you heat a sample of gas, what happens to the particles that make up the gas?
The particles move faster.
100
Any sample of matter has mass and takes up space. The main reason for this is:
Matter is made up of tiny particles that have mass and take up space.
100
Draw the particles (molecules and atoms) of room temperature liquid compared to heated liquid.
Room temp: random, one movement line, close together. Heated: random, two movement lines, far apart.
200
If you put food coloring in room temp. water, the coloring spreads throughout the water, why?
Water molecules are in motion.
200
Describe what happens on a molecular level when a solid is heated.
The atoms or molecules that make up the solid move faster. This movement competes with the attraction between molecules and they spread out a little.
200
To describe a gas, you could say: (2 ways)
The particles are not very attracted to each other. They are further apart than than the particles of a solid or liquid.
200
Three common states of matter are:
Solid, Liquid, Gas
200
Draw the molecules of a solid at room temperature and heated.
Room temperature: organized, close together, one movement line. Heated: organized, a little further apart, two movement lines.
300
How can you describe a liquid (4 ways)
Particles of liquid are attracted to each other, are in motion, move past each other, and is matter.
300
To describe a solid you could say (3 ways)
Solid particles are attracted to each other, vibrate but don't move past each other, and take up space.
300
True or False: Cooling a gas completely stops all molecular movement?
False, it just slows it down.
300
________________ is the study of matter.
What is chemistry.
300
Draw gas molecules at room temp. and heated.
Room temp: random, far apart, one movement line. Heated: random, very far apart, two movement lines.
400
True or False: An increase in temperature increases molecular motion in a liquid.
True
400
True or False: The atoms of a solid are very far apart and vibrate in a fixed position.
False: Solids are very close together because of their attraction.
400
True or False: The molecules of a gase are not very attracted to each other?
True
400
When heating a state of matter what happens to the particles? When cooling a state of matter what happens to the particles?
Increase in speed and increase distance between the particles. Decrease in speed and decrease distance between the particles.
400
If the particles of a liquid are always in moving, why don't they all come apart from each other and become a gas?
Even though the particles of a liquid are moving, they are attracted to each other so they don't just spread far apart to become a gas. Some do evaporate though.
500
Why does the red liquid in a thermometer move down when put in cold water?
When cooled, the molecules in the liquid inside the thermometer get a little closer together. Because the liquid takes up less space, the red line moves down the tube.
500
When you heat a sample of a solid, the sample gets a little bigger because:
The particles move faster and get a little further apart.
500
Explain why gas is matter.
Gas is matter because it is made up of atoms and molecules. Atoms and molecules have mass and take up space so they are matter. Basketball or compressed air example also accepted.
500
Are particles of a liquid more attracted to the particles of a solid? Explain.
Particles of a solid are more attracted to each other because they can't slide past each one another the way the particles of a liquid can.
500
If two thermometers have different liquids in them, the liquids can move to different heights in the thermometers even if they are measuring the same temperature. Why does this happen?
Different liquids are made up of different molecules with different attractions for one another. If they are heated, the molecules will increase their speed but the amount that they separate from each other and move up the tube will be different.
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