WorksheetsChapter 1 - Unit Test
Total questions: 50
Worksheet time: 37mins
Any sample of matter has mass and takes up space. The main reason for this is because:
All matter is heavy
Matter can be a gas
Matter is made up of tiny particles that have mass and take up space
The Earth is made of matter
Water drops stay together on wax paper and don’t break apart easily. This is mainly because:
Water molecules are small
Water molecules are in motion
Water molecules are attracted to each other
Water molecules are wet
If you put food coloring in room temperature water, the coloring spreads throughout the water. The water causes the color to spread mainly because:
Water molecules are warm
Water molecules are in motion
Water is more dense than food coloring
Food coloring molecules are small
Food coloring spreads out faster in hot water than in cold water. This is mainly because:
The water molecules in hot water move more quickly
The molecules in hot water are larger
The food coloring molecules are small
Hot water is less dense
When a thermometer is heated, the red liquid inside the thermometer moves up. This is mainly because:
The red liquid is thin
The molecules of the liquid move faster and get a little further apart
Hot liquid is lighter
The glass of the thermometer gets hot
When a thermometer is cooled, the red liquid inside the thermometer moves down. This is mainly because:
Cold liquids sink
The glass of the thermometer gets cold
The molecules of the liquid move slower and get a little closer together
The red liquid is thick
When you heat a sample of a solid, the particles that make up the solid:
Get bigger
Loose mass
Move faster
Slow down
When you heat a sample of a solid, the sample gets a little bigger. This is mainly because:
The particles move faster and get a little further apart
Heat helps the particles grow
Heating the sample makes it lighter
Heating helps the particles slide past each other
When you heat a sample of gas, what happens to the particles that make up the gas?
The particles move faster
The particles break apart
The particles get smaller
The particles become more dense
To describe a liquid, you could say:
The particles of a liquid are attracted to one another
The particles of a liquid are in motion
The particles of a liquid are able to move past one another
A liquid has mass and takes up space
To describe a solid, you could say:
The particles of a solid are attracted to each other
The particles of a solid can move past one another
The particles of a solid vibrate but do not move past one another
A solid has mass and takes up space
To describe a gas, you could say:
The particles are very attracted to each other
The particles are not very attracted to each other
The particles are close together like a liquid
The particles of a gas are further apart than the particles in a liquid or solid
The three common states of matter are _____, _____, and _________.
solid, liquid, gas
water, air, fire
earth, wind, fire
plasma, crystal, foam
The particles of a liquid are attracted to one another, but can’t move past each other.
True
False
___________ is the study of matter.
Chemistry
Biology
Physics
Astronomy
An increase in temperature increases molecular motion and increases the distance between atoms and molecules in solids, liquids, and gases.
True
False
A __________ in the speed of the molecules allows the attractions between molecules to bring them a little closer together.
decrease
increase
fluctuation
stabilization
Even when measuring the same temperature, the liquids in different thermometers can move to different heights depending on the liquid inside of them.
True
False
The molecules of the liquid inside the thermometer increase in speed when the thermometer is ___________.
heated
cooled
shaken
broken
The atoms of a solid are very far apart and vibrate in fixed positions.
True
False
Cooling a solid ______ the motion of the atoms.
decreases
increases
stops
accelerates
Heating a gas stops all of its molecular motion.
True
False
Air has mass.
True
False
The molecules of a gas are not very attracted to each other.
True
False
If the particles of a liquid are always moving, why don’t they all come apart from each other and become a gas?
Water beads up on the surface of a freshly waxed car. If you use your finger to drag one drop very close to another and let them touch, the two drops quickly join to become one bigger drop. What can you infer about water molecules based on this observation?
Even though water in a clear glass appears still, a drop of food coloring placed at the surface will slowly move throughout the water. Eventually, without stirring or shaking, the water will become evenly colored. What can you infer about water molecules based on these observations?
What do the circles and lines tell you about the arrangement, spacing, and speed of water molecules in room temperature water?
In a little more than a tablespoon of water, there are about 600 billion trillion water molecules. If you could count 1 million water molecules every second, it would take about 200 million centuries (20 billion years) to count all the molecules in that tablespoon of water! What does this amazing fact tell you about the size of water molecules?
What differences would you expect if, at the same time, you place yellow and blue food coloring in both hot and cold water?
The speed of molecules in hot water compared to molecules in cold water is:
faster in hot water than in cold water
slower in hot water than in cold water
the same in both hot and cold water
zero in hot water
Draw circles and motion lines in each box to show differences in the movement and arrangement of water molecules in cold, room temperature, and hot water.
Thermometers have a very thin tube inside that stretches up from a round bulb at the bottom, which holds most of the liquid.
Why does the red liquid move up the tube when a thermometer is heated?
Why does the red liquid move down the tube when a thermometer is cooled?
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. This happens because:
different liquids expand by different amounts when heated
the thermometers are not accurate
the liquids have different colors
the thermometers are made of different materials
Show the difference between the speed and spacing of the molecules in hot water and cold water. Draw circles in each straw below to represent water molecules. Use motion lines to represent the speed of the molecules.
Do you think that the particles of a solid or liquid are more attracted to each other?
Particles of a solid are more attracted to each other than those of a liquid.
Particles of a liquid are more attracted to each other than those of a solid.
Particles of a solid and liquid are equally attracted to each other.
Particles of a gas are more attracted to each other than those of a solid or liquid.
Explain how the motion and attractions of the atoms in the metal ball cause it to get slightly larger when heated.
The atoms move faster and spread apart, causing the ball to expand.
The atoms slow down and come closer together, causing the ball to shrink.
The atoms stop moving, keeping the ball the same size.
The attractions between atoms increase, making the ball contract.
Describe what happens on the molecular level when a solid is heated.
When a solid is heated, the atoms or molecules it is made of move faster. This movement competes with the attraction between the molecules and they spread out a little.
When a solid is heated, the atoms or molecules stop moving and become fixed in place.
When a solid is heated, the atoms or molecules shrink and move closer together.
When a solid is heated, the atoms or molecules disappear completely.
In the demonstration with the metal ball and ring, why didn’t the ball fit through the ring after the ball was heated with a Bunsen burner?
The ball didn’t fit through the ring because when the ball was heated, the atoms moved faster and got a little further apart. They spread out enough that the ball could not fit through the ring.
The ball didn’t fit through the ring because the ring shrank when the ball was heated.
The ball didn’t fit through the ring because the ball became lighter and floated above the ring.
The ball didn’t fit through the ring because the ball changed its shape into a square when heated.
If the metal ring was cooled a lot, and the metal ball was at room temperature, would the ball still fit through the ring?
If the ring was cooled a lot, the atoms would slow down enough that their attractions would bring them closer together. This could cause the ring to get a little smaller so the ball might not be able to fit through.
If the ring was cooled a lot, it would expand and the ball would easily fit through.
Cooling the ring would have no effect on its size, so the ball would always fit through.
If the ring was cooled a lot, the ball would shrink and fit through more easily.
Sometimes on especially hot days, a wooden door, that opens and closes just fine during cooler months, will be hard to open and close. Why is the door hard to open and close on hot days?
On hot days, the molecules that make up the door are slightly further apart. This makes the door just a little bigger than normal, so it gets stuck.
On hot days, the door becomes lighter and floats above the frame.
On hot days, the hinges of the door freeze and stop moving.
On hot days, the paint on the door melts and glues it shut.
Is gas matter? How do you know?
Which state of matter does this picture represent?
Solid
Liquid
Gas
Plasma
What state of matter does the picture represent?
Solid
Liquid
Gas
Plasma
What are the 3 states of matter? CLICK the BEST three ANSWERS BELOW
Water, Air, Ground
Solid, Liquid, Gas
Rain, Soil, Oxygen
Which jar best models the molecules of a gas?
A
B
C
What happens to the size of a metal object when it is heated?
It expands because the atoms move faster and spread apart.
It contracts because the atoms move closer together.
It stays the same size because atoms do not move.
It melts immediately.
Which of the following best describes the arrangement of molecules in a gas?
Molecules are tightly packed and vibrate in place.
Molecules are fixed in a rigid structure.
Molecules are close together but can slide past each other.
Molecules are far apart and move freely.
What state of matter is pictured?
Solid
Liquid
Gas
Plasma
