What are solids, liquids, and gases?
*Solid- definite shape & volume
*Liquid- definite volume, takes shape of container
*Gas- no definite shape or volume
100
____________ and ___________ have no shape of their own. They take the shape of whatever container they are in.
What are liquids and gases?
100
Define mass and weight, and tell which one stays constant.
What is
*Mass- the amount of matter in an object.
*Weight- a measure of the pull of gravity on an object.
**Mass stays constant** **Weight can change depending on gravity**
100
In a chemical change, a _______ substance is formed.
What is a new substance?
100
Define matter.
What is anything that has mass and takes up space?
200
Describe the particles that make up solids, liquids, and gases.
What is
*Solids- tightly packed together-molecules vibrate in place.
*Liquids- molecules farther apart, move more freely
*Gases- molecules very far apart, move quickly & freely
200
Which substance has a definite shape and volume? Give an example.
What is a solid? Examples vary.
200
__________ is the amount of space that an object takes up.
What is volume?
200
When paper is burned, this type of change has taken place.
What is a chemical change?
200
Define volume.
What is the amount of space that an object takes up.
300
Describe the volume of solids, liquids, and gases.
What is
*Solids- definite volume
*Liquids-definite volume
*Gases- no definite volume
300
____________ does not have a definite volume. Give an example.
What is a gas? Example: oxygen, carbon dioxide, etc.
300
List the tool that can be used to measure the mass of an object.
What is a balance scale?
300
Define physical change, and give 2 examples of a physical change.
What is changing the appearance of a substance. Example: tearing paper, or ice melting.
300
Define a mixture.
What is a physical combination of 2 or more different kinds of matter that keep their own properties & can be easily separated.
Example: a salad, trail mix, etc.
400
Water boils at ______ Fahrenheit.
Water freezes at ______ Fahrenheit.
What is 212 degrees, and 32 degrees
400
Can a chemical change be reversed? Why or why not?? Give an example.
What is no it cannot be reversed because a new substance is formed. Example: burning paper: turns to ash cannot revert back to original paper.
400
Describe the 2 ways you can measure volume.
What is: **Volume formula: Length x Width x Height
*Water Displacement: put the object in water & measure how far it has moved.
400
Color change, heat, light or gas production are all examples of this type of change.
What is a chemical change?
400
________ is a type of mixture that can't be easily separated. The particles are evenly mixed together. Give an example of this.
What is a solution? Example: making lemonade.
500
_________ is when particles escape from a liquid and become a gas. **Give an example**
_______ is when a substance changes from a gas to a liquid. **Give an example.
What is evaporation and condensation?
*Examples: water boiling (evaporation) and water vapor in the air cooling, forming water droplets (condensation)
500
If you travel to the moon, would your mass be the same or different? Would your weight be the same or different? Explain why.
What is mass would be the same because it always remains constant. Weight would be different because the pull of gravity is less on the moon.
500
Kari combines pretzels (3 ounces), chocolate candy (4 ounces), and marshmallows (2 ounces) into a trail mix. She adds peanuts which weigh 5 ounces. What is the total weight of the mixture?
What is 14 ounces?
500
Describe what happens when iron reacts with oxygen over time (rusting). What type of change is this?
What is the molecules of metal turn into new kinds of molecules. This is a chemical change.
500
__________ is the concentration of matter in an object. You can calculate it by taking the mass of an object divided by the volume. *Hint: A bowling ball would have more of this than a balloon.