AP Bio Chem review

What is a covalent bond?

• electrons are shared
• electrons are given up or taken
• there is an electrostatic attraction
• there is no such thing

Tags

NGSS.HS-PS1-1

What are the valence electrons?

• electrons in the outer shell
• all electrons in the atom
• electrons the atom needs
• positive electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is NOT one of the main 4 elements found in living organisms?

• Carbon
• Nitrogen
• Sulfur
• Oxygen

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons

What do neutrons most contribute to in an atom?

• Atomic Number
• Charge
• Mass
• Nothing

Tags

NGSS.HS-PS1-8

If an atom has an equal amount of Protons and electrons, what will its’ charge be?

• Positive
• Negative
• Neutral
• Infinite

Which of the following is correctly defined as the attraction of the hydrogen from one molecule to the oxygen of a different molecule?

• amphipathic
• hydrophobic
• hydrogen bonding
• adhesion

Because water has a positively charged end and a negatively charged end, it can be described as

• amphipathic
• hydrophobic
• polar
• nonpolar

Tags

NGSS.HS-ESS2-5

The property of water that allows water molecules to stick to each other is

• adhesion
• cohesion
• density
• specific heat

Tags

NGSS.HS-ESS2-5

Water molecules require a lot of energy to separate one from the others.  This gives water a high

• density
• polarity
• solvency
• specific heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5