Chemistry for APBio - Check In

What is the atomic mass of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the atomic number of this atom?

• 4
• 5
• 9
• none of the above

Tags

NGSS.MS-PS1-1

An ionic bond forms when

• valence electrons are shared back and forth (move between) two atoms.

• a sea of mobile electrons surround the cations and they then become negativly charged

• valence electrons are transferred from one atom to another, forming charged ions that are then pulled together by attraction between opposite charges

• none of the above

Tags

NGSS.MS-PS1-1

What makes a molecule polar?

• Equal sharing of valence electrons
• Unequal sharing of valence electrons
• Stealing of electrons
• Temporary charges that come and go

CO₂ is an example of a(n) _____ bond.

• covalent
• adhesive
• ionic
• cohesive

Tags

NGSS.HS-PS1-1

LiF is an example of a(n) _____ bond.

• covalent
• adhesive
• ionic
• cohesive

Tags

NGSS.HS-PS1-2

Covalently bonded molecules are made of atoms that

• share electorns
• shoot their electrons out into space
• move their electrons to the nucleus of the atom
• give electrons to and accept electrons from each other

The compounds on the left side of a chemical equation are called the _____.

• Ingredients
• Reactants
• Total
• Products

Which of the following is an organic compound?

• H₂O
• C₆H₁₂O₆
• NH₂
• OH

Why is Carbon so important to living things?

• It forms molecules easily
• It can form many shapes
• It is in most organic molecule
• All of these