Unit 2 SG

Question 1

What is matter?

Answer 1

anything that occupies space and has mass

Question 2

What are the components of an atom?

Answer 2

protons, neutrons, electons

Question 3

Does a proton have a charge and mass?

Answer 3

positive charge and 1 mass

Question 4

does an electron have a charge and mass?

Answer 4

negative charge and but no mass

Question 5

What is a chemical bond?

Answer 5

the relationship between electrons

Question 6

If an atom has a different number of protons than neutrons it is called ____

Answer 6

an isotope

Question 7

What is an ion?

Answer 7

When an atom does not have an equal amount of electrons and protons

Question 8

A complete transfer of electron

Answer 8

ionic bond

Question 9

shared electron in bond
strongest bond
most common bond

Answer 9

covalent

Question 10

Non polar covalent bond

Answer 10

electrons are shared equally

Question 11

polar covalent bond

Answer 11

electrons spend more time closer to one nucleus than the other

Question 12

Tension, cohesion, adhesion, hard to change temperature, universal solvent, solid floats in liquid

Answer 12

special characteristics of water.

Question 13

water molecules stick together

Answer 13

cohesion

Question 14

water molecules stick to other substances

Answer 14

adhesion

Question 15

what is pH measuring?

Answer 15

hydrogen ion concentration

Question 16

what is an acid?

Answer 16

adds H+ to a solution

Question 17

what is a base?

Answer 17

absorbs H+ from a solution

Question 18

what does a buffer consist of?

Answer 18

a weak acid and a conjugate base.