Chemistry 1

Question 1

Atom

Answer 1

smallest unit of an element`

Question 2

Nucleus

Answer 2

• center of an atom
• made of neutrons and protons
• contains most of an atoms mass

Question 3

Proton

Answer 3

positively charged particle found inside a nucleus (+)(1AMU)

Question 4

AMU

Answer 4

Atomic Mass Unit

Question 5

nuetron

Answer 5

uncharged particle (+-) (1AMU)

Question 6

Electron

Answer 6

negatively charged proton (-) which is located in shells around an atomic nucleus

Question 7

Quark

Answer 7

the things that make up particles

Question 8

alkai metals

Answer 8

The alkali metals are a group (column) in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).

Question 9

noble gases

Answer 9

any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table.

Question 10

cation

Answer 10

positively charged ion

Question 11

anion

Answer 11

negatively charged ion

Question 12

valence shell

Answer 12

outer shell of an atom

Question 13

valence electron

Answer 13

outer electron of a shell

Question 14

octet

Answer 14

group of eight valence electrons surrounding an atom

Question 15

ion

Answer 15

an atom or group of atoms in which the number of electron s is different from the number of proton s