10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt The Physical The Chemical What’s the Matter? Matter Make-up Matter Mix
True or False: Changing the state of matter is a physical change.
True
When a solid changes into a liquid what process is occurring?
Melting
When a liquid changes state into a gas, what process is occurring?
Evaporation
Taylor made a lego tower made with three colors of legos. It weighed 5 pounds. The yellow piece and the blue piece both weighed 1.5 lbs. How much did the red one weigh?
2 pounds
Ryan weighed a glue stick and it weighed 3 lbs. The cap weighed.5 pounds. How much did the base weigh?
2.5 pounds
Name two examples of changes of state.
Melting, freezing, boiling, condensing, evaporating
What is a physical change?
A physical change is a change that does not result in a new substance.
Give two examples of physical changes.
Physical changes: Ice melting, glass breaking, wood being chopped, paper being cut, etc.
What are three physical properties of a globe?
Physical properties are anything that have to do with the globe itself.
What is a mixture? Give me two examples following the definition.
A mixture is two or more substances being combined without being changed. Ex: trail mix, salad, salt water, sand, etc.
What is a chemical property?
A chemical property is a property that involves how a substance interacts with other substances.
Name one chemical property of the element Iron.
Iron reacts with oxygen and water to form rust.
What is a chemical change?
A chemical change is a change that results in one or more new substances.
Which state of matter is most dense? Solid, liquid, or gas.
The particles in a solid are more tightly packed than both a liquid and a solid.
Give me three examples of chemical changes.
Chemical changes ex: an egg cooking, cake baking, fireworks, tarnish, rust, etc.
What is density?
Density is how closely packed the particles are in a substance.
What are two clues to help you know whether a chemical reaction has occurred?
Clues include a change in color, smell, a new physical property is created, there is a substance given off, or heat.
What type of change is demonstrated by each picture shown?
What are two experiments that we did that demonstrated chemical changes?
Examples will vary.
What is the difference between the particles that make up a solid, a liquid, and a gas?
The particles in a solid are locked in place, in a liquid they are flowing freely, and in a gas they are far apart and moving quickly.
What are the three states of matter?
Solid, liquid, and gas
What is the difference between weight and mass?
Weight changes with the pull of the gravity. Mass is the amount of matter in a substance and never changes.
Which of the following is a physical change? -shredding paper -striking a match -iron rusting -egg cooking
Shredding paper is a physical change.
Which of the following is a chemical change? -breaking glass -water evaporating -bread baking -wood being chopped
Bread baking is a chemical change.
What is the definition of matter?
Matter is anything that has mass or takes up space.