7/8 Science 1.4 Types of Bonds

What is an ion?

• anything that has a positive charge

• atom or group of atoms with a positive or negative charge

• anything with a negative charge

• a group of atoms that can only have a negative charge

What is the charge of an electron?

• negative

• positive

• neutral

• it depends on the element

Tags

NGSS.MS-PS2-3

What is a molecule?

• a chemical bond formed when atoms share electrons

• a group of atoms with a positive charge

• a neutral group of atoms joined by covalent bonds

• a group of atoms with a negative charge

Tags

NGSS.MS-PS1-1

What is a covalent bond?

• a bond formed when atoms transfer electrons

• a neutral group of atoms

• a group of atoms with a positive charge

• a chemical bond formed when atoms share electrons

How many electrons are in a full energy level?

• 6

• 7

• 8

• 9

What is an ionic bond?

• a bond formed when atoms transfer electrons

• a chemical bond formed when atoms share electrons

• a group of positive elements

• a group of negative elements

What are three properties of ionic compounds

• ionic crystals, high melting point, doesn't conduct electricity

• ionic crystals, high melting point, conducts electricity

• ionic crystals, low melting point, doesn't conduct electricity

• ionic crystals low melting point, conducts electricity

Tags

NGSS.HS-PS1-3

Do covalent compounds have high or low melting points?

• high

• low

Tags

NGSS.MS-PS1-4

If an atom has 2 valence electrons, how many electrons does it want to gain or lose?

• gain 2

• lose 2

• gain 6

• lose 1

If an atom has 5 valence electrons, how many electrons does it want to gain or lose?

• gain 5

• lose 5

• gain 3

• lose 3