Properties of Matter
What is the term for the amount of space something takes up?
Volume
What happens when a tomato rots? (What type of change occurs?)
Chemical Change
Riley and Jill are studying what happens to matter when it changes state. What happens to the mass of an object when it changes states?
The mass does not change.
What is the term for a mixture that has the same composition throughout?
A solution.
At what temperature does liquid water become a gas?
Temperatures above 100 degrees celcius.
Describe the particles in a liquid.
They are close together but not touching. They slide around each other a little but do not float freely.
What happens during a chemical reaction? Be specific.
A new substance is formed during a chemical change.
Peter places 6 balls of modeling clay on one side of a balance. He places a plastic cup with cubes inside on the other side of the balance. It takes 35 cubes to balance with the clay. He then removed the clay and shaped it into a dinosaur. How many cubes will it take to balance with the dinosaur?
35 cubes.
What kind of mixture can a sieve/mesh screen separate?
A mixture with substances that are different sizes.
Why is a tomato rotting an example of a chemical change?
It forms mold which is a new substance.
There are different characteristics for each state of matter. Describe the difference between a solid and liquid.
Solids have a definite volume and liquids do not.
How does water change at it evaporates? (Volume and Mass)
Its mass remains unchanged but its volume increases.
A cup holds 150 grams of liquid water and 50 grams of ice. What is the mass of the liquid water once all of the ice has melted?
200 grams.
Adding food coloring to water creates a solution. Is it true or false that ALL solutions are evenly mixed?
True
Fill in the blanks:
Liquids have a ________ shape and a ________ volume.
Nondefinite and definite
Matter may be a solid, liquid, or a gas. It can change from one state to another state. Why does MOST matter change states?
Changes in temperature.
Which of the following is a physical change? Explain.
1. Iron rusting on a car
2. Cooking eggs
3. Ice melting
4. Tomato rotting
3. Ice melting. It is undergoing a change in state but it is still water.
How does slicing a banana into 10 bite sized pieces affect the mass of the banana?
It does not change the mass.
False. Boiling/evaporation can separate this type of mixture.
Explain how temperature affects the speed in which a chemical change will occur.
The higher the temperature, the quicker a chemical change can happen.
List FIVE properties of matter.
Answers may vary but can include shape, color, odor, texture, temperature, density, mass, volume, etc.
Label each of the following changes correctly:
1. Liquid to solid _______
2. Solid to liquid _______
3. Liquid to gas ________
4. Gas to liquid _________
1. Freezing
2. Melting
3. Evaporation
4. Condensation
Explain what Conservation of Mass means.
Matter can change due to a physical or chemical change, but the mass will remain the same.
Explain 2 key differences between a mixture and solution.
A mixture is not evenly mixed and a solution is. In a solution one substance is dissolved in another. Mixtures can easily be separated and solutions cannot.
What is a tool you can use to separate substances that have iron and substances that do not contain iron?
A magnet.