8th Science Unit 1 Review

Front

Which of the following is an example of an element? Water, Oxygen, Salt, Air

Back

Oxygen

Front

What is a compound?

Back

A mixture of two or more elements that are chemically combined.

Front

What best describes a homogeneous mixture?

Back

A mixture that looks the same throughout.

Front

Which of the following is a heterogeneous mixture? Saltwater, air, salad, sugar

Back

Salad

Front

What does the periodic table help you identify?

Back

The atoms involved in chemical reactions.

Front

Which law states that mass is conserved in a chemical reaction?

Back

Law of Conservation of Mass

Front

What is the chemical formula for water?

Back

H₂O

Front

Which of the following is NOT a compound? NaCl, H₂O, O₂, CO₂

Back

O₂

Front

What is a product of photosynthesis?

Back

Oxygen

Front

Which of the following best describes a chemical reaction?

Back

Atoms are rearranged to form new substances.