Chapter 2

Question 0

Atom

Answer 0

The functional unit of matter

Question 1

Element

Answer 1

Substance that cannot be broken down chemically into simpler kinds of matter

Question 2

Nucleus

Answer 2

Core of the atom, consists of two kinds of subatomic particles

Question 3

Protons have a __ charge

Answer 3

Positive

Question 4

Neutrons have a __ charge

Answer 4

No

Question 5

99.9% of the atoms mass is found in ___

Answer 5

The nucleus

Question 6

Stable atom

Answer 6

When the atom have a full outer shell

Question 7

Elements go through ___ to make them more stable

Answer 7

Reactions

Question 8

Ion

Answer 8

Charges particle or atom

Question 9

Positive ion

Answer 9

Cation

Question 10

Negative ion

Answer 10

Anion

Question 11

Two major types of bonds

Answer 11

Ionic

Covalent

Question 12

Bond formed from the loss or gain of electrons

Answer 12

Ionic bond

Question 13

Atoms become charged in a ___ bind

Answer 13

Ionic

Question 14

Bond formed by 2 atoms that share one or more pair of electrons

Answer 14

Covalent bond

Question 15

Substance that reduces the amount of energy need for a recruit to occur

Answer 15

Catalyst

Question 16

Protein that acts like a biological catalyst

Answer 16

Enzyme

Question 17

Reactant loses 1 or more electrons and becomes positive

Answer 17

Oxidation reaction

Question 18

Reactant gains 1 or more electrons and becomes negative

Answer 18

Reduction reaction

Question 19

Reaction where electrons are transferred between atoms

Answer 19

Redox reaction

Question 20

Best mixed mixture

Answer 20

Solution

Question 21

Homogenous mixture in why one or more substances are uniformly distributed in another substance

Answer 21

Solution

Question 22

Two parts of a solution

Answer 22

Solute

Solvent

Question 23

Solute

Answer 23

Substance being dissolved in the solution

Question 24

Solvent

Answer 24

Substance in which the solute is dissolved

Question 25

The relative a,our of hydronium ions in a solution

Answer 25

Acids

Question 26

4 characteristics of acidic solutions

Answer 26

- acidic solutions contain higher concentrations of H3O then hydroxide ions - tend to have a sour taste - can burn skin, eyes, mucous membranes - very high concentrations of it are corrosive

Question 27

Contains more OH than H3O ions

Answer 27

Basic solution

Question 28

Scale for measuring the concentration of H3O and OH in a solution

Answer 28

pH scale

Question 29

pH scale ranges from __ - __

Answer 29

0 | 14

Question 30

On a pH scale 0-6.9= 7= 7.1-14=

Answer 30

Acidic solution Neutral A basic or alkaline solution

Question 31

Chemical substance that neutralize small amounts of acid or base

Answer 31

Buffer