Chapter 2 The Chemical Basis of Life I: Atoms, Molecules, and

What is matter?

• Anything that has mass and occupies space

• Anything that is weightless and invisible

• Only solid objects

• Only living organisms

What are all life forms composed of?

• Energy

• Matter

• Light

• Sound

In which states can matter exist?

• Solid, liquid, or gas

• Solid, plasma, or vapor

• Liquid, vapor, or plasma

• Gas, plasma, or light

What are the smallest functional units of matter that form all chemical substances?

• Molecules

• Compounds

• Atoms

• Elements

What cannot be further broken down into other substances by ordinary means?

• Molecules

• Atoms

• Compounds

• Mixtures

What do chemists study that are two or more atoms bonded together?

• Elements

• Compounds

• Molecules

• Mixtures

What is each specific type of atom called?

• Molecule

• Compound

• Element

• Mixture

What charge do protons have?

• Positive (+)

• Negative (−)

• Neutral

• Variable

Where are neutrons found in an atom?

• In the atomic nucleus

• In the orbitals

• Outside the atom

• In the electron cloud

What is the charge of electrons?

• Negative (−)

• Positive (+)

• Neutral

• No charge