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Flashcards in Chapter 2 Deck (32)
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Element

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

1

Atom

The functional unit of matter

2

Nucleus

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

3

Protons have a __ charge

Positive

4

Neutrons have a __ charge

No

5

99.9% of the atoms mass is found in ___

The nucleus

6

Stable atom

When the atom have a full outer shell

7

Elements go through ___ to make them more stable

Reactions

8

Ion

Charges particle or atom

9

Positive ion

Cation

10

Negative ion

Anion

11

Two major types of bonds

Ionic
Covalent

12

Bond formed from the loss or gain of electrons

Ionic bond

13

Atoms become charged in a ___ bind

Ionic

14

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

Covalent bond

15

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

Catalyst

16

Protein that acts like a biological catalyst

Enzyme

17

Reactant loses 1 or more electrons and becomes positive

Oxidation reaction

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Reactant gains 1 or more electrons and becomes negative

Reduction reaction

19

Reaction where electrons are transferred between atoms

Redox reaction

20

Best mixed mixture

Solution

21

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

Solution

22

Two parts of a solution

Solute
Solvent

23

Solute

Substance being dissolved in the solution

24

Solvent

Substance in which the solute is dissolved

25

The relative a,our of hydronium ions in a solution

Acids

26

4 characteristics of acidic solutions

-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

27

Contains more OH than H3O ions

Basic solution

28

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

pH scale

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pH scale ranges from __ - __

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14