Chemistry Test Big Big Test

Front 1

purpose of the periodic table?

Back 1

organize the elements, help us study chemistry

Front 2

what are groups of elements and how are they labeled?

Back 2

columns

#1-18

-across top of periodic table

Front 3

what are periods and how are they labeled?

Back 3

rows

#1-7

-left side of periodic table

Front 4

what do the elements of a group have in common?

Back 4

the number of valence electrons

Front 5

3 categories of elements

Back 5

-metals

-metalloids

-non metals

Front 6

does the periodicity of properties show up down a group or across a period?

Back 6

there is a gradual predictable change

- basically a trend

Front 7

what is an alloy? examples?

Back 7

a mixture of 2 or more metals

-bronze, brass, steel

Front 8

what are the methods for separating a mixture?

Back 8

filtration- solid and liquid

distillation- boiling 2 substances

crystallization- solid to liquid

chromatography

Front 9

where on the periodic table do you find metals, non metals and metalloids?

Back 9

metals

-left of the zig zag line

non metals

-right of zig zag line

metalloids

-along zig zag line

Front 10

4 physical properties of metals?

Back 10

-luster

-ductile

-malleable

-good conductors

-most solid at room temperature

Front 11

3 properties of non metals?

Back 11

-dull

-brittle solids

-poor conductors

Front 12

homogeneous? and example?

heterogeneous? and example?

Back 12

homogeneous- same throughout; coffee w/creamer

heterogeneous- can be physically separated; fruit salad

Front 13

most active non metals?

Back 13

group 17; halogens

Front 14

most active metals?

Back 14

group 1; alkali metals

Front 15

elements of group 1 are called?

Back 15

alkali metals

Front 16

elements of group 2 are called?

Back 16

alkaline earth metals

Front 17

-burning

-baking

Back 17

chemical change

Front 18

-change of state

-tearing of paper

Back 18

physical change

Front 19

"salt former" means what ?

Back 19

halogens

Front 20

elements of the periodic table are arranged according to their____________________?

Back 20

atomic number

Front 21

size of atom, measured between 2 adjacent nuclei

Back 21

atomic radius

Front 22

energy required to move from one electron from a neutral

Back 22

ionization energy

Front 23

the ability of an atom to attract electrons in a chemical bond

Back 23

electronegativity

Front 24

cations

Back 24

positive +

lose an electron and get smaller to be +

Front 25

anions

Back 25

negative -

gain an electron and get bigger to be -

Front 26

shielding effect and the size of the atomic radius related?

Back 26

shielding effect reduces the pull on the outer electrons from the nucleus

-the size of the atom increases

Front 27

modern atomic theory

Back 27

Dalton

Front 28

nucleus and proton

Back 28

Rutherford

Front 29

neutron

Back 29

Chadwick

Front 30

electron

Back 30

Thomson

Front 31

Planetary model

Back 31

Bohr

Front 32

atoms of the same element with different numbers of neutrons

-same # of protons

Back 32

isotopes

Front 33

mass cannot be created or destroyed in a chemical reaction

Back 33

law of conservation of mass

Front 34

parts of an atom?

charges?

mass?

Back 34

proton- positive- 1 amu

electron- negative- 1/1840 amu

neutron- neutral- 1 amu

Front 35

what does amu stand for?

Back 35

atomic mass unit