Physical and Chemical Review

When does a physical change occur?

• when molecules combine to form a compound

• when a new element is created

• when the size, shape, or state of matter chages

• when elements cobine to form a molecule

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which type of change can be reversed?

• a physical change

• a chemical change

• a molecular change

• an electric change

Tags

NGSS.MS-PS1-4

Which of the following would cause the molecules in matter to change?

• a moderate climate

• pressure

• motion

• extreme heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If a substance changes color, what has most likely happened?

• a pressurized change has taken place

• a chemical change has taken place

• a physical change has taken place

• nothing has taken place

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Stepping on a bag of potato chips would cause which type of change?

• mechanical

• thermal

• physical

• chemical

Which of the following is a clue that a chemical change has taken place?

• a gas forms when the change takes place

• the substance is smaller than it was before the change took place

• the substance has been shaken up

• the substance looks the same as it did before the change took place

Tags

NGSS.MS-PS1-2

If a substance changes color, what has most likely happened?

• a physical change can only occur in liquids, and a chemical change can occur in a solid, liquid, or a gas

• A physical change is when the size, shape, or state of matter changes, and a chemical change is when the molecules of matter change to form a new substance.

• A physical change is when the molecules of matter change to form a new substance, and a chemical change is when the size, shape, or state of matter changes.

• A physical change can occur in a solid, a liquid, or a gas, and a chemical change can only occur in a liquid.

Tags

NGSS.MS-PS1-2

What is the term for combining 2 or more substances that can be EASILY seperated

• mixture

• solution

• kool aid

• sweet tea

What is the term for combining 2 or more substances that CANNOT be easily seperated?

• mixture

• trail mix

• salad

• solution

What are the different ways we could seperate mixtures and solutions?

• Magnet and Filtration

• Hands, collander, seive

• magnet, boiling and allowing to settle

• all of the above