Study Guide

Question 1

S.I. unit of speed

Answer 1

m/s

Question 2

S.I. unit of length/distance

Answer 2

meter, m

Question 3

S.I unit of time

Answer 3

second, s

Question 4

S.I unit of temperature

Answer 4

kelvin, K

Question 5

S.I. unit for amount of substance

Answer 5

mole, mol

Question 6

S.I. unit of electric current

Answer 6

ampere, A

Question 7

What did Millikian’s drop oil experiment establish?

Answer 7

The charge on an electron

Question 8

What did J.J. Thomson discover?

Answer 8

What an electron even is

Question 9

S.I. unit for acceleration

Answer 9

Δv/Δt, (m/s)/s = m/s^2

Question 9

What is Rutherford known for?

Answer 9

The nucleus inside of an atom

Question 10

If the distance between two charged particles is halved, the electrostatic force between them will?

Answer 10

Quadruple,

Question 11

S.I unit for velocity

Answer 11

mph, m/s, Δx/Δt

Question 12

S.I. unit for force

Answer 12

F= mass x acceleration, kg x m/s^2

Question 13

Coulomb’s law

Answer 13

F= 1/4πε0 x q1q2/ d2

Question 14

Element

Answer 14

Pure substance that always consist of a single type of atom

Question 15

Molecular Compound

Answer 15

when divided, the smallest pieces are still the same type of substance with the same elements ex, H2O

Question 16

Mixture

Answer 16

Composed of more than one pure substance ex, air, saltwater, wood, humans

Question 17

Ionic Compounds

Answer 17

Compounds made up of ions that form charged particles when an atom (or group of atoms) gains or loses electrons ex, NaCl

Question 18

Physical Change

Answer 18

The composition stays the sane, just appears different. ex, freezing, boiling, melting

Question 19

Chemical Change

Answer 19

The composition will change, change of materials into another ex, baking a cake, iron rusting

Question 20

Homogeneous Mixture

Answer 20

Same proportions of its mixture throughout. ex, water, wine

Question 21

Heterogeneous Mixture

Answer 21

Visually distinguishable components. ex, rocky road ice cream, salad

Question 22

Law of Conservation of Mass (Lavoisier)

Answer 22

The mass of something before a chemical reaction will be the same after. Mass will not change

Question 23

Law of Definite Composition (Proust)

Answer 23

A chemical compound will always contains its component elements in fixed ratio

Question 24

Law of Multiple Proportions

Answer 24

When two chemical elements combine to form more than one compound, the masses will always end of being a small whole number ratio

Question 25

Isotope

Answer 25

Atoms of an element that have the same number of protons, but different numbers of neutrons