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Biology: Chapter 2 Notes > Ch. 2 > Flashcards

Ch. 2 Flashcards

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0
Q

First to use the term atoms

A

Democritus

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1
Q

Basic building block if matter

A

Atoms

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2
Q

Has mass, has positive charge, located in nucleus

A

Three characteristics of proton.

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3
Q

Has mass, neutral charge, located in the nucleus

A

Characteristics of neutron.

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4
Q

No mass, has negative charge, located in electron cloud

A

Characteristics if electron

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5
Q

Center if the atom( protons and neutrons there)

A

Nucleus

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6
Q

Surrounded the nucleus (electrons there)

A

Electron shells

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7
Q

Group of the same atoms out together

A

Element

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8
Q

Total number of protons and neutrons

A

Atomic weight

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9
Q

Number of protons in the atom

A

Atomic number

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10
Q

Abbreviation for a elements name

A

Chemical symbols

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11
Q

Atoms with the same number if protons but different number of neutrons

A

Isotopes

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12
Q

Smallest part of a compound, that still acts like that compound

A

Molecules

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13
Q

Two or more elements that are chemically combined

A

Compounds

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14
Q

Abbreviation of a compound’s name

A

Chemical formulas

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15
Q

Force of attraction between two. Atoms

A

Chemical bond

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16
Q

Transfer electrons

A

Ions

17
Q

Share electrons

A

Covalent

18
Q

Water to water attraction

A

Cohesion

19
Q

Water to another substance attraction

A

Adhesion

20
Q

Are clear mixtures

A

Solutions

21
Q

2 or more substances that are physically combined

A

Mixture

22
Q

Will settle

A

Suspension

23
Q

Does no settle

A

Colloid

24
Q

Solid

A

Solutes

25
Q

Liquid

A

Solvents

26
Q

Substance that lowers acidity

A

Buffers

27
Q

Studies substances with carbon to hydrogen bonds

A

Organic chemistry

28
Q

Single unit found in a substance

A

Monomers

29
Q

Chains of monomers connected together

A

Polymers

30
Q

Simple sugars

A

Monosaccharides

31
Q

Starches

A

Polysaccharides

32
Q

A process that changed one set of chemicals into another set of chemicals

A

Chemical reactions

33
Q

The substances that you start with in a reaction

A

Reactants

34
Q

The substances that you end up with in a reaction

A

Products

35
Q

Reaction that gives off energy ( bonds r broken)

A

Exothermic

36
Q

Reaction that takes in energy ( bonds are made)

A

Endothermic

37
Q

Energy required to get a reaction started

A

Activation energy

38
Q

Substance that speeds up a reaction

A

Catalyst

39
Q

Proteins that act as biological catalysts

A

Enzymes

40
Q

Substance that slows down a reaction

A

Inhibitor

Biology: Chapter 2 Notes (1 decks)

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