Science Card Set 1

Front 1

What do you call the outer shell electrons?

Back 1

Valence electrons

Front 2

The term used when two chemicals look different are ___

Back 2

Homogeumius

Front 3

The term used when two elements look the same is____

Back 3

Heterogenius

Front 4

Electrons lost or gained called

Back 4

Valence number

Front 5

Number of infront molecules

Back 5

coefficient

Front 6

Noble gasses tend to

Back 6

Not react with other elements

Front 7

Amt of space an object takes up is

Back 7

the volume

Front 8

Amt of mass per unit of volume

Back 8

Density

Front 9

Elements found next to eachother

Back 9

Mixture

Front 10

what increases across a period in the periodic table?

Back 10

Atomic size

Front 11

How are elements arranged in the modern periodic table?

Back 11

Increasing atomic #

Front 12

What is a group?

Back 12

Same valence # and similar chemical and physical properties

Front 13

What is a period

Back 13

(Horizantal) Same electron level and increasing mass number

Front 14

What is an element

Back 14

Composed of 1 type of atom

Front 15

Atom

Back 15

Smallest part of an element

Front 16

Metal

Back 16

Malleable, ductile, high melting point, good conducters of heat and electricity

Front 17

Non-metal

Back 17

No luster, dull appearance, low melting point, bad conducters of heat and electricity

Front 18

Mellatoid

Back 18

Features both metal and non-metal properties

Front 19

What happens when properties of elements combine?

Back 19

Loose or gain electrons
Lithium Flouride

Front 20

Molecule

Back 20

Elements chemically combined in a definite proportion

Front 21

Compound

Back 21

Can only be seperated by another chemical reaction

Front 22

mixture

Back 22

Can easily be seperated

Front 23

Coefficient

Back 23

Tells you how many molecules are present

Front 24

Subscript

Back 24

How many atoms of the element are present

Front 25

Balance chemical equation

Back 25

# and type of atoms that go in and out the same way

Front 26

Metals on periodic table

Back 26

Left of step

Front 27

Non-metals on the periodic table

Back 27

Right of step

Front 28

Mellatoids on the periodic table

Back 28

on or below step

Front 29

Atomic size _________ when L-R on periodic table

Back 29

Decreases

Front 30

Reactivity L-R on periodic table

Back 30

Very reactive, less reactive, unreactive

Front 31

metallic properties L-R on periodic table

Back 31

Metal- Mellatoid- Non-metal

Front 32

Matter

Back 32

Anything that takes up space

Front 33

Measure mass on a

Back 33

triple beam balance

Front 34

Measure volume of solids and liquids with

Back 34

graduated cylinder