What is matter?
How is matter measured?
How do substances mix?
How does matter change?
Why does matter have energy?
100
What are three properties of matter?
solid, liquids, and gas
100
Name two tools you can use to measure matter.
metric rulers, balances, and graduated cylinder
100
A ___________________ is a combination of two or more substances.
mixture
100
In a ____________________, the particles that make up a substance of matter do not change.
physical change
100
_________is the ability to cause change or do work.
Energy
200
Name 5 things that are solid states of matter in the classroom.
Answers will vary
200
_______________ is the measure of the amount of matter in an object.
mass
200
Substances in a mixture can be separated, this means they are not ________________________ combined.
chemically
200
What is an example of a physical change.
Anything that does not change the particles that makes up matter.
200
What happens to the motion of particles when an object becomes hotter?
As on object becomes hotter, its particles move more quickly.
300
Give two examples of items in a liquid state of matter that you may find in a kitchen.
Juice, water, milk, etc.
300
______________is the amount of space that matter takes up.
Volume
300
If you stir salt and water together, you make a mixture. The salt dissolves in the water. What type of mixture is this?
Solution
300
A ______________ change produces a completely different kind of matter.
chemical
300
What causes liquid in a thermometer to travel up and down the tube?
Matter expands as temperature increases, so the liquid moves up the tube when the motion of its particles increases.
400
In the gas state, water is called ___________________
Water vapor
400
________________ the amount of mass in a certain volume of matter
Density
400
In a solution of salt and water, the salt is the _______________ and the solvent is the ______________.
solute, water
400
What is an example of a chemical change?
rust, tarnish, burning wood
400
What is the difference between an insulator and a conductor?
Insulators are materials that limit the amount of heat that passes through them. Conductors are materials that allow heat to move readily through them.
500
Describe the particles in a solid, liquid, and gas state of matter.
Solid - closely packed together, some energy, move back and forth but do not change places with each other. Liquid - Particles are not held together as tightly as in a solid, slide past one another. Gas - Particles are very far apart from one another, move in all directions, move easily and quickly.
500
Explain why steel sinks in water and cork floats.
Since the density of steel is greater than the density of water, steel sinks in water. The density of the cork is less than that of water, so it floats.
500
What factors affect the solubility of a substance?
temperature of the solvent and the size of its particles.
500
When you are chewing food, are you causing a physical change, chemical change, or both?
Your teeth grind the food into smaller pieces, which is a physical change. Your saliva breaks down the food into different substances, which is a chemical change.
500
How does energy from the Sun reach Earth?
Radiant energy from the Sun travels through empty space to reach Earth.
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