1.6 Chemistry Review

How are you feeling today?

• 
• 
• 

the small, dense region consisting of protons and neutrons at the center of an atom

• nucleus

• electron cloud

• atom

• matter

Basic units of matter composed of electrons, protons, and neutrons

• ion

• molecule

• compound

• atom

• element

Pure substance that cannot be broken down, defined by the number of proton’s in its atom

• element

• compound

• molecule

• ion

• atom

A group of atoms bonded together

• element

• compound

• molecule

• ion

• atom

A substance composed of many molecules that themselves are composed of atoms from more than one element, held together by chemical bonds

• element

• compound

• molecule

• ion

• atom

Hydrogen is an example of a(n)-

• element

• compound

Water is an example of a(n)-

• element

• compound

What is an atom?

• A molecule
• The smallest unit of matter
• Elements bonded together
• Water

What is an electron?

• A positively charged particle in the nucleus of an atom.
• A negatively charged particle that orbits the nucleus

• A neutrally charged particle in the nucleus of an atom.