chemistry

Acidity is characterized by _________. Select all that apply!

• A low pH

• A high pH

• A high concentration of H+ ions

• A high concentration of OH- ions

• A high concentration of water

Select all that apply: What are the sub-atomic particles found in the nucleus?

• Electrons

• Protons

• Neutrons

• Elements

The atomic number for carbon is 6. How many protons does carbon have?

• 2

• 4

• 6

• 12

The atomic mass is...

• The number of electrons + the number of protons in the nucleus

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of neutrons + the number of protons in the nucleus

True or False: The number of electrons the first energy shell can hold is 8 electrons.

• True

• False

True or False: Ionic bonds form salts

• True

• False

When electrons are shared equally between the atoms involved they are

• Polar covalent bonds

• Non-polar covalent bonds

• Non-polar ionic bonds

• Polar ionic bonds

Valence Electrons are electrons in the

• 3rd electron shell

• 1st electron shell

• the outermost electron shell

A neutral atom has...

• The same number of neutrons as protons

• The same number of electrons as protons

• The same number of electrons and neutrons

• either gained or lost and electron

These molecules are examples of _________.

• amino acids
• triglycerides
• monosaccharides
• lipids