Unit 1 - Chemistry

Question 1

element is

Answer 1

one type of atom

Question 2

compound is

Answer 2

2 or more elements combined in a fixed ratio

Question 3

top 4 elements in humans

Answer 3

CHON

Question 4

atom is

Answer 4

smallest unit of an element that retains properties of an element

Question 5

protons are

Answer 5

positive charged subatomic particle

Question 6

neutrons are

Answer 6

no charged subatomic particle

Question 7

orbitals surround

Answer 7

nucleus with electrons

Question 8

electrons are

Answer 8

negative charged subatomic particles

Question 9

first shell has __ electrons

Answer 9

2

Question 10

outer shells have __ electrons

Answer 10

8

Question 11

the atomic number represents

Answer 11

the number of protons

Question 12

element symbol is the short hand for

Answer 12

the element

Question 13

mass number =

Answer 13

protons + neutrons

Question 14

electrons (in neutral element) =

Answer 14

number of protons

Question 15

like elements that have an equal of proton but diff number on neutron

Answer 15

isotope

Question 16

a covalent bond is when two elements

Answer 16

share electrons

Question 17

a non polar covalent bond is when the elements share

Answer 17

electrons equally

Question 18

a polar covalent bond is when the elements share

Answer 18

electrons unequally

Question 19

hydrogen bonds are the attractions between

Answer 19

partial positive and partial negative atoms

Question 20

ionic bonds is the interaction between an atom

Answer 20

that lost an electron and an atom that gained electron

Question 21

valance

Answer 21

is the bonding capacity of unpaired electrons

Question 22

chemical reaction is the

Answer 22

making and breaking of chem bonds