Question 1

group that does not receive the independent variable

Accepted Answer

control

Question 2

SI unit for mass

Accepted Answer

kilogram (kg)

Question 3

SI unit for amount of substance

Accepted Answer

mole

Question 4

name of group 1A elements

Accepted Answer

alkali metals

Question 5

subatomic particle with a negative charge

Accepted Answer

electron

Question 6

name of group 17 (7A) elements

Accepted Answer

halogens

Question 7

amount of space an object takes up

Accepted Answer

volume

Question 8

range from 0 to 6 on pH scale ; turn blue litmus paper red

Accepted Answer

acids

Question 9

used to speed up chemical reactions

Accepted Answer

catalyst

Question 10

the overall charge of an atom

Accepted Answer

neutral

Question 11

the charge of the nucleus of an atom

Accepted Answer

positive

Question 12

says that 8 is the stable number of valence electrons

Accepted Answer

octet rule

Question 13

an unbalanced chemical equation

Accepted Answer

skeleton

Question 14

ions with a (+) charge ; groups 1A, 2A, 3A

Accepted Answer

cations

Question 15

change in number of neutrons

Accepted Answer

isotope

Question 16

whole numbers used to balance chemical equations

Accepted Answer

coefficients

Question 17

A + B --> AB

Accepted Answer

synthesis reaction

Question 18

AB --> A + B

Accepted Answer

decomposition reaction

Question 19

the number of protons only

Accepted Answer

atomic number

Question 20

the sum of of protons and neutrons

Accepted Answer

atomic mass

Question 21

the study of matter and the changes it goes through

Accepted Answer

chemistry

Question 22

range from 8 to 14 on pH scale ; turn red paper blue

Accepted Answer

bases

Question 23

bond made by transferring valence electrons ; never use prefixes

Accepted Answer

ionic

Question 24

bond made by sharing valence electrons; always use prefixes

Accepted Answer

covalent

Question 25

aka manipulated variable ; plotted on x axis

Accepted Answer

independent variable

Question 26

aka responding variable ; plotted on y axis

Accepted Answer

dependent variable

Question 27

educated guess or proposed answer to a scientific question ; must be testable

Accepted Answer

hypothesis

Question 28

conditions kept the same during an experiment

Accepted Answer

constants

Question 29

a series of logical steps followed to answer a scientific question

Accepted Answer

scientific method

Question 30

electrons furthest from the nucleus

Accepted Answer

valence

Question 31

inner electrons closer to the nucleus

Accepted Answer

core

Question 32

SI unit for temperature

Accepted Answer

Kelvin

Question 33

SI unit for length

Accepted Answer

meter

Question 34

made of 2 atoms examples: N , F

Accepted Answer

diatomic

Question 35

starting material in chemical reaction

Accepted Answer

reactants

Question 36

ending material in chemical reaction

Accepted Answer

products

Question 37

is conserved in every chemical reaction

Accepted Answer

number of atoms and molar mass

Question 38

amount of matter an object has

Accepted Answer

mass

Question 39

group 18 (8A) elements

Accepted Answer

noble gases

Question 40

metals found in d block

Accepted Answer

transition

Question 41

metals found in the f block

Accepted Answer

inner transition

Question 42

used to speed up chemical reactions in living things

Accepted Answer

enzyme

Question 43

nuclei of radioactive isotopes split apart releasing energy

Accepted Answer

nuclear fission

Question 44

2 or more small radioactive nuclei combine releasing energy

Accepted Answer

nuclear fusion

Question 45

PV=nRT

Accepted Answer

Ideal Gas Law

Question 46

radiation with the most energy and penetrating power

Accepted Answer

gamma rays

Question 47

diagram to represent ONLY valence electrons

Accepted Answer

Lewis Dot Structure

Question 48

diagram of the distribution of ALL electrons

Accepted Answer

Electron configuration

Question 49

a change that does NOT result in new composition

Accepted Answer

physical change

Question 50

a change that does result in a new composition

Accepted Answer

chemical change

Question 51

his number is 6.02 x 10^23 representative particles

Accepted Answer

Avogardro

Question 52

made first periodic table ; arranged elements by increasing atomic mass

Accepted Answer

Mendeleev

Question 53

mixture that looks the same

Accepted Answer

homogeneous

Question 54

mixture that looks different

Accepted Answer

heterogeneous

Question 55

Use of C-14 levels to determine the age of an artifact

Accepted Answer

Carbon Dating

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