Warm-up (Recall-Chapter 1_Introduction to Chemistry and Matter)

Which of the following is NOT considered matter?

• Air

• Light

• Water

• Wood

Which of the following is a pure substance?

• Air

• Salt water

• Milk

• Water

_______ is the amount of matter in an object and is usually measured in grams or kilograms.

What is the study of matter and the changes it undergoes?

• Biology

• Physics

• Chemistry

• Astronomy

What is the smallest unit that makes up all matter?

• Cells

• Atoms

• Molecules

• Compounds