Science Mid Term

Front 1

Vector quantity

Back 1

Magnitude and direction

Front 2

Scalar quantity

Back 2

Just magnitude

Front 3

Reference point

Back 3

Position you use for context. Ex. How far is school from your house

Front 4

Origin

Back 4

where you start from

Front 5

Position

Back 5

Where you are

Front 6

Distance

Back 6

total length of the journey

Front 7

Displacement

Back 7

How far from origin point

Front 8

Speed

Back 8

Distance per unit of time

Front 9

Velocity

Back 9

Speed in a direction

Front 10

Time

Back 10

unit of measurement. Ex. S, min, hr

Front 11

Change in

Back 11

Delta or /\

Front 12

Acceleration

Back 12

Increase in the rate or speed of somethjng

Front 13

Newtons first law

Back 13

an object in motion will stay in motion unless acted on by an external force

Front 14

Newtons second law

Back 14

Acceleration of an object as produced by net force in = to the mass of an object

Front 15

Newtons third law

Back 15

for every action there is an equal and opposite action

Front 16

Position time graph

Back 16

graphs time and position of something

Front 17

Magnitude

Back 17

Size or extent of something

Front 18

Element

Back 18

a substance consisting of atoms

Front 19

Molecule

Back 19

A group of atoms

Front 20

Compound

Back 20

Group of 2 or more elements bonded together

Front 21

Atom

Back 21

smallest part of an element

Front 22

Proton

Back 22

particle found in the nucleus of an atom with a positive charge

Front 23

Neutron

Back 23

Subatomic particle found inside of the nucleus of an atom with no charge

Front 24

Electron

Back 24

Particle found outside of the nucleus of an atom with a negative charge

Front 25

Subatomic particles

Back 25

Any particle smaller than a hydrogen atom

Front 26

Nucleus

Back 26

Central part of an atom that had protons and neutrons inside

Front 27

Shell

Back 27

a grouping of electrons surrounding the nucleus of an atom

Front 28

Valence

Back 28

Outermost shell of an atom

Front 29

Period

Back 29

Horizontal row on the periodic table

Front 30

Group/family

Back 30

Vertical row on a periodic table

Front 31

Ion

Back 31

Electrically charged atom or group of atoms

Front 32

Cation

Back 32

Positively charged ion due to losing electrons

Front 33

Anion

Back 33

negatively charged ion due to gaining electrons

Front 34

Ionic compound

Back 34

Chemical compound with ions held together by electrostatic forces, is neutral. When there is a metal it is an ionic compound.

Front 35

Multivalent

Back 35

Valence shell of 3 or higher

Front 36

Metal

Back 36

Groups 1,2. Good conductor, solid, ductile (strechy)

Front 37

Nonmetal

Back 37

Groups 14-18. Poor conductor, gains electrons easily

Front 38

Trans metal

Back 38

Groups 3-13. Needs roman numeral to get charge, good conductors.

Front 39

Metalloids

Back 39

Staircase, not usually good conductors, brittle

Front 40

Atomic number

Back 40

number of protons

Front 41

Atomic mass

Back 41

Number of protons and neutrons

Front 42

Alkali Metals

Back 42

Group 1, reactive, positively charged

Front 43

Alkaline earth metals

Back 43

group 2, low density.

Front 44

Halogens

Back 44

Group 17, reactive nonmetals

Front 45

Noble gases

Back 45

Group 18, already stable

Front 46

Molecular compound

Back 46

Group of atoms sharing electrons. Use Greek prefixes.

Front 47

Ionic bond

Back 47

a chemical bind formed with 2 ions of opposite charges, when one atom gives up 1 or more electrons.

Front 48

Covalent bond

Back 48

Sharing electrons in a group of 3 or more elements.

Front 49

Polyatomic ion

Back 49

Other page in periodic table book. More than 1 atom combined.