2425 cba review

Which of the following is a mixture?

• Water

• Salt

• Air

• Gold

Which of the following is a compound?

• Oxygen

• Hydrogen

• Carbon dioxide

• Nitrogen

Tags

NGSS.MS-PS1-1

Which of the following best describes a homogeneous mixture?

• Sand and water

• Oil and water

• Salt dissolved in water

• Iron filings and sulfur

Which of the following is NOT a pure substance?

• Element

• Compound

• Mixture

• Molecule

Which of the following is a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

Which of the following is the best evidence of a chemical change?

• A. Change in shape

• B. Change in state

• C. Formation of a new substance

• D. Dissolving in water

Tags

NGSS.MS-PS1-2

Which of the following processes involves a chemical change?

• A. Freezing water

• B. Boiling water

• C. Burning paper

• D. Melting wax

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• A. Cutting paper

• B. Dissolving sugar in water

• C. Cooking an egg

• D. Mixing sand and salt

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens to dilution as temperature goes down?

• A. It increases

• B. It decreases

• C. It stays the same

• D. It fluctuates randomly

Tags

NGSS.MS-PS1-4

Which of the following best describes a solution?

• A. A mixture of two or more substances that are not chemically combined

• B. A homogeneous mixture of two or more substances

• C. A substance that cannot be separated into simpler substances