Ch. 2

Question 0

First to use the term atoms

Answer 0

Democritus

Question 1

Basic building block if matter

Answer 1

Atoms

Question 2

Has mass, has positive charge, located in nucleus

Answer 2

Three characteristics of proton.

Question 3

Has mass, neutral charge, located in the nucleus

Answer 3

Characteristics of neutron.

Question 4

No mass, has negative charge, located in electron cloud

Answer 4

Characteristics if electron

Question 5

Center if the atom( protons and neutrons there)

Answer 5

Nucleus

Question 6

Surrounded the nucleus (electrons there)

Answer 6

Electron shells

Question 7

Group of the same atoms out together

Answer 7

Element

Question 8

Total number of protons and neutrons

Answer 8

Atomic weight

Question 9

Number of protons in the atom

Answer 9

Atomic number

Question 10

Abbreviation for a elements name

Answer 10

Chemical symbols

Question 11

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

Answer 11

Isotopes

Question 12

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

Answer 12

Molecules

Question 13

Two or more elements that are chemically combined

Answer 13

Compounds

Question 14

Abbreviation of a compound’s name

Answer 14

Chemical formulas

Question 15

Force of attraction between two. Atoms

Answer 15

Chemical bond

Question 16

Transfer electrons

Answer 16

Ions

Question 17

Share electrons

Answer 17

Covalent

Question 18

Water to water attraction

Answer 18

Cohesion

Question 19

Water to another substance attraction

Answer 19

Adhesion

Question 20

Are clear mixtures

Answer 20

Solutions

Question 21

2 or more substances that are physically combined

Answer 21

Mixture

Question 22

Will settle

Answer 22

Suspension

Question 23

Does no settle

Answer 23

Colloid

Question 24

Solid

Answer 24

Solutes

Question 25

Liquid

Answer 25

Solvents

Question 26

Substance that lowers acidity

Answer 26

Buffers

Question 27

Studies substances with carbon to hydrogen bonds

Answer 27

Organic chemistry

Question 28

Single unit found in a substance

Answer 28

Monomers

Question 29

Chains of monomers connected together

Answer 29

Polymers

Question 30

Simple sugars

Answer 30

Monosaccharides

Question 31

Starches

Answer 31

Polysaccharides

Question 32

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

Answer 32

Chemical reactions

Question 33

The substances that you start with in a reaction

Answer 33

Reactants

Question 34

The substances that you end up with in a reaction

Answer 34

Products

Question 35

Reaction that gives off energy ( bonds r broken)

Answer 35

Exothermic

Question 36

Reaction that takes in energy ( bonds are made)

Answer 36

Endothermic

Question 37

Energy required to get a reaction started

Answer 37

Activation energy

Question 38

Substance that speeds up a reaction

Answer 38

Catalyst

Question 39

Proteins that act as biological catalysts

Answer 39

Enzymes

Question 40

Substance that slows down a reaction

Answer 40

Inhibitor