1-2 Chemistry

Question 0

Element

Answer 0

Pure substance considered a building of matter

Question 1

Matter

Answer 1

Substance which occupies space
All non and living things
Solid liquids or gasses

Question 2

Elements naturally occuring

Answer 2

92

Question 3

Subatomic particles

Answer 3

Make up elections neutrons protons

Question 4

Biologically Significant elements

Answer 4

Carbon
Hydrogen
Nitrogen 
Oxygen 
Phosphorus
Sulfur

Question 5

Atom

Answer 5

Smallest unit of an element

Question 6

Protons
Neutrons
Electrons

Answer 6

Positive
Neutral
Negative

Question 7

Energy shells

Answer 7

2
8
8
8
Inner shell low energy
Outer shell high energy

Question 8

Valence

Answer 8

Amount of electrons on outer shell

Question 9

Atomic number

Answer 9

Protons atom has

Question 10

Atomic mass

Answer 10

protons plus neutrons

Question 11

Electrically neutral atom

Answer 11

Protons equals electrons

Question 12

Placement of periodic table

Answer 12

Atomic # above atomic mass
Horizontal by increase number of atomic number
Vertically by number of electrons on outer most shell

Question 13

Isotopes

Answer 13

Atoms of the same element that have the same atomic number but different number of neutrons
Can be unstable
When decayed they emit radioactive particles

Question 14

Atomic mass represents

Answer 14

Average of each element

Question 15

Carcinogenic

Answer 15

Harmful radiation

Question 16

Radio active isotopes uses

Answer 16

Carbon dating
Tracers in medical test
Medical imaging
Radiation therapy