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Midterm Vocab For Bio > Chapter 2 > Flashcards

Chapter 2 Flashcards

0
Q

Atom

A

The functional unit of matter

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1
Q

Element

A

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

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2
Q

Nucleus

A

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

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3
Q

Protons have a __ charge

A

Positive

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4
Q

Neutrons have a __ charge

A

No

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5
Q

99.9% of the atoms mass is found in ___

A

The nucleus

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6
Q

Stable atom

A

When the atom have a full outer shell

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7
Q

Elements go through ___ to make them more stable

A

Reactions

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8
Q

Ion

A

Charges particle or atom

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9
Q

Positive ion

A

Cation

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10
Q

Negative ion

A

Anion

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11
Q

Two major types of bonds

A

Ionic

Covalent

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12
Q

Bond formed from the loss or gain of electrons

A

Ionic bond

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13
Q

Atoms become charged in a ___ bind

A

Ionic

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14
Q

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

A

Covalent bond

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15
Q

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

A

Catalyst

16
Q

Protein that acts like a biological catalyst

A

Enzyme

17
Q

Reactant loses 1 or more electrons and becomes positive

A

Oxidation reaction

18
Q

Reactant gains 1 or more electrons and becomes negative

A

Reduction reaction

19
Q

Reaction where electrons are transferred between atoms

A

Redox reaction

20
Q

Best mixed mixture

A

Solution

21
Q

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

A

Solution

22
Q

Two parts of a solution

A

Solute

Solvent

23
Q

Solute

A

Substance being dissolved in the solution

24
Q

Solvent

A

Substance in which the solute is dissolved

25
Q

The relative a,our of hydronium ions in a solution

A

Acids

26
Q

4 characteristics of acidic solutions

A
  • 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
Q

Contains more OH than H3O ions

A

Basic solution

28
Q

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

A

pH scale

29
Q

pH scale ranges from __ - __

A

0

14

30
Q

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

A

Acidic solution
Neutral
A basic or alkaline solution

31
Q

Chemical substance that neutralize small amounts of acid or base

A

Buffer

Midterm Vocab For Bio (7 decks)

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