Unit 2 - Basic Chemistry & Water

Question 1

Atom

Answer 1

Basic unit of matter (smallest piece of pure substance)

Question 2

Element

Answer 2

A pure substance of one type of atom

Question 3

Isotope

Answer 3

Same element, different number of neutrons

Question 4

Ion

Answer 4

Charged atom/molecule (+/- electrons)

Question 5

Covalent Bond

Answer 5

Atoms share electrons

Question 6

Ionic Bond

Answer 6

Ions of opposite charges attract and form a molecule

Question 7

Hydrogen Bond

Answer 7

Weak bond between polar molecules

Question 8

Polarity

Answer 8

Uneven charge distribution in molecules

Question 9

Solvent

Answer 9

Substance that dissolves another substance

Question 10

Solute

Answer 10

Substance that is dissolved by another substance

Question 11

Hydrophobic

Answer 11

“Water-fearing”, repels water

Question 12

Hydrophilic

Answer 12

“Water-loving”, dissolves in water

Question 13

Cohesion

Answer 13

Water molecules stick to each other

Question 14

Surface Tension

Answer 14

How hard it is to break water’s surface

Question 15

Adhesion

Answer 15

Water sticks to other surfaces