Unit 2 Matter & Change

Which of the following is NOT a pure substance?

• Element

• Compound

• Mixture

• Molecule

The different substances in a mixture

• keep their physical properties

• form new molecules

• cannot be separated

• combine chemically

Which of the following is NOT a potential sign of chemical change?

• Change in odor

• Boiling

• Fizzing

• Change in color

Tags

NGSS.MS-PS1-2

Which of the following causes a chemical change?

• Moving

• Melting

• Burning

• Shattering

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Unlike a mixture, a pure substance has

• Atoms

• Molecules

• A specific size

• A fixed composition

Which of the following is an example of a chemical change?

• Ice melting

• Paint fading

• Pounding gold into a coin

• A puddle evaporating

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a homogeneous mixture?

• Diamond

• Milk

• Sulfuric Acid

• Iron

Which of the following is a heterogeneous mixture?

• Ammonia

• A dog

• Bronze

• Carbon dioxide

What is a substance that cannot be broken down into simpler substances?

• Compound

• Element

• Mixture

• Polyatomic Ion

What is the smallest unit of matter that has properties of that element?

• Molecule

• Compound

• Mixture

• Atom