Compounds And Molecules

Question 0

Molecule

Answer 0

Smallest unit of a compound

Question 1

Atom

Answer 1

Smallest unit of an element

Question 2

Compound

Answer 2

2 or more elements chemically combined

Question 3

Element

Answer 3

Made up of only 1 type of atom

Question 4

Chemical formula

Answer 4

Explains the type and number of elements in a compound

Question 5

Covalent bond

Answer 5

A chemical bond that occurs when 2 atoms share an electron

Question 6

Chemical bond

Answer 6

A bind that holds 2 atoms together in a compound

Question 7

Ionic bond

Answer 7

A chemical bond that occurs when one atom gives an electron to another atom

Question 8

Positive ion

Answer 8

When an atom loses one or more electrons

Question 9

Valence electron

Answer 9

An electron in the outer shell of an atom

Question 10

Ion

Answer 10

A charged atom that has gained or lost electrons

Question 11

Negative ion

Answer 11

When an atom gains one or more electrons

Question 12

Water

Answer 12

H2O

Question 13

Stomach acid

Answer 13

HCl

Question 14

Carbon Dioxide

Answer 14

CO2

Question 15

Sugar

Answer 15

C6H12O6

Question 16

Table salt

Answer 16

NaCl

Question 17

Sand

Answer 17

SiO2

Question 18

Rust

Answer 18

Fe2O3

Question 19

Limestone

Answer 19

CaCO3

Question 20

An ion is an atom that has gained or lost electrons.

Answer 20

True

Question 21

If an atom gains an electron, then it has a positive charge.

Answer 21

False

Question 22

If Sodium loses one electron, then it’s ion charge is Na-.

Answer 22

False

Question 23

If Chlorine gains one electron it’s ion charge is Cl-2.

Answer 23

False