Module #3: Atoms And Molecules

Question 1

The Law Of Mass Conversion

Answer 1

Matter cannot be created or destroyed; it can only change forms.

Question 2

Elements

Answer 2

Any substance that cannot be decomposed into less massive substances

Question 3

Hydrogen

Answer 3

Atomic number: 1, Symbol: H, Weight: 1.01

Nonmetal

Question 4

Helium

Answer 4

Atomic number: 2, Symbol: He, Weight: 4.0

Nonmetal

Question 5

Lithium

Answer 5

Atomic number: 3, Symbol: Li, Weight: 6.94

Standard metal

Question 6

Berryllium

Answer 6

Atomic number: 4, Symbol: Be, Weight: 9.01

Standard metal

Question 7

Boron

Answer 7

Atomic number: 5, Symbol: B, Weight: 10.8

Nonmetal

Question 8

Carbon

Answer 8

Atomic number: 6, Symbol: C, Weight: 12.0

Nonmetal

Question 9

Nitrogen

Answer 9

Atomic number: 7, Symbol: N, Weight: 14.0

Nonmetal

Question 10

Oxygen

Answer 10

Atomic number: 8, Symbol: O, Weight: 16.0

Nonmetal

Question 11

Fluorine

Answer 11

Atomic number: 9, Symbol: F, Weight: 19.0

Nonmetal

Question 12

Neon

Answer 12

Atomic number: 10, Symbol: Ne, Weight: 12.2

Nonmetal

Question 13

Sodium

Answer 13

Atomic number: 11, Symbol: Na, Weight: 23.0

standard metal

Question 14

Magnesium

Answer 14

Atomic number: 12, Symbol: Mg, Weight: 24.3

Standard metal

Question 15

Aluminum

Answer 15

Atomic number: 13, Symbol: Al, Weight: 27.0

Standard metal

Question 16

Silicon

Answer 16

Atomic number: 14, Symbol: Si, Weight: 28.1

Nonmetal

Question 17

Phosphorus

Answer 17

Atomic number: 15, Symbol: P, Weight: 31.0

Nonmetal

Question 18

Sulfur

Answer 18

Atomic number: 16, Symbol: S, Weight: 32.1

Nonmetal

Question 19

Chlorine

Answer 19

Atomic number: 17, Symbol: Cl, Weight: 35.5

Nonmetal

Question 20

Argon

Answer 20

Atomic number: 18, Symbol: Ar, Weight: 39.9

Nonmetal

Question 21

Potassium

Answer 21

Atomic number: 19, Symbol: K, Weight: 39.1

Standard metal

Question 22

Calcium

Answer 22

Atomic number: 20, Symbol: Ca, Weight: 40.1

Standard metal

Question 23

Compounds

Answer 23

Substances that can be decomposed into elements by chemical means

Question 24

The law of definite proportions

Answer 24

The proportion of elements in any compound is always the same

Question 25

The Law of Multiple Proportions

Answer 25

If two elements combine to form different compounds, the ratio of masses of the second element that react with a fixed mass of the first element will be a simple, whole number ratio

Question 26

Mono

Answer 26

One

Question 27

Di

Answer 27

Two

Question 28

Tri

Answer 28

Three

Question 29

Tetra

Answer 29

Four

Question 30

Penta

Answer 30

Five

Question 31

Hexa

Answer 31

Six

Question 32

Hepta

Answer 32

Seven

Question 33

Octa

Answer 33

Eight

Question 34

Nona

Answer 34

Nine

Question 35

Deca

Answer 35

Ten

Question 36

What are the first ten elements?

Answer 36

Hydrogen, Helium, Lithium, Berrylium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon.

Question 37

What are the elements from eleven to twenty?

Answer 37

Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine, Argon, Potassium, Calcium.