Chemistry of Life

When is an ionic bond formed?

• when electrons are shared

• when protons are shared

• when oppositely charged atoms gain or lose electrons

• when oppositely charged atoms gain or lose a proton

What are the smallest basic units of matter?

• molecules

• atoms

• elements

• 7th graders

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

What subatomic particle is electrically neutral (no charge)?

• Proton
• Ion
• Neutron
• Electron

The simplest natural substance is called a(n)

• Element

• Compound

• Mixture

• Solution

Two or more elements chemically combined together are called a

• Element

• Compound

• Mixture

• Solution

Isotopes of an element have a different number of...

• Protons

• Neutrons

• Electrons

• Mass

A _______ is the force that holds atoms together in a compound.

• Chemical Formula

• Chemical Reaction

• Chemical Bond

• Synthesis Reaction