Solid, Liquid, Gas
Physical vs. Chemical Reactions
Measuring Matter
Properties of Matter
What's the Matter?
100
A ____________ have a definite volume and takes the shape of the container it is in.
liquid
100
How is a physical change different than a chemical change?
Physical changes can often be reversed. Chemical changes create a new substance and cannot be reversed.
100
What is mass?
A measure of how much matter is in an object
100
Circle all of the properties that can be used to identify matter:
magnetism
electrical conductivity
hardness
reflectivity
density
ALL of the Above
100
What is matter?
Any object that has mass and takes up space.
200
How are the particles in a solid different than in a liquid? Draw a model to explain.
Solids are packed tightly together. Liquids - particles are far enough apart that they can slide around each other.
200
What is an example of a chemical change?
Rust on a car
baking a cake
burning a candle
burning wood
200
What tool does a scientist use to measure mass?
balance scale
200
What is reflectivity?
An object’s ability to reflect light.
200
Give two examples of matter.
Sample answer:
milk, juice, water
helium, oxygen
chair, toy, book
300
How are the particles in a liquid different than in a gas? Draw a model to explain.
In a liquid particles are far enough apart to slide around each other. In a gas, the particles spread far apart to fill up a space.
300
What are ways that you can physically change matter?
bend, cut, break, rip, tear, flatten
300
What is volume?
how much space an object takes up
300
What is density?
An object’s ability to sink or float.
300
What does the word dissolve mean?
When one substance’s molecules disperse between the particles of a liquid.
400
How do particles that are hot differ than particles that are cold?
Hot - particles move faster
Cold - particles move slower
400
Is rust forming on a car a physical or chemical change? How do you know?
Chemical - creates a new substance
400
What is a tool a scientist might use to measure the volume of a liquid?
graduated cylinder
400
Explain the most efficient way to separate sand and iron filings.
use a magnet
400
____________ is a substance that does NOT dissolve in water.
salt
sugar
sand
Kool-Aide
sand
500
Martha put a pot of water on to boil. She forgot about it. Explain what will eventually will happen to the water in the pot.
It will evaporate out
500
Is a candle burning a chemical or physical change? Explain why.
Chemical - burning the candle creates carbon dioxide and ash from wick
Melting the wax is a physical change, however.
500
Explain two ways to measure the volume of an eraser.
Measure the L x W x H
or
Use a cylinder of water, drop it inside and see how much water is displaced.
500
Explain the most efficient way to separate salt and water.
Boil it until the water is evaporated.
500
Draw a model of what particles of salt look like when they are dissolved into a glass of water.
Salt particles should be drawn in between the molecules of water