Elements

Question 1

What is a molecule?

Answer 1

Two or more of the same or different atoms bonded together

Question 2

Which element is most important to life

Answer 2

Carbon

Question 3

What is a compound?

Answer 3

Two or more different elements bonded together. A compound is a type of molecule.

Question 4

Which 6 elements are most common in living organisms?

Answer 4

Carbon, phosphorus, sulfur, hydrogen, oxygen, nitrogen

Question 5

What is a chemical formula

Answer 5

Describes the type and amount of atoms

Question 6

What is an isomer?

Answer 6

Substances that share chemical formulas but have different structures

Question 7

How many atoms of each element are there :

C(16)He(9)N(2)

Answer 7

Sixteen carbon atoms, nine helium atoms, and two nitrogen atoms

Question 8

What is atomic number?

Answer 8

The number of protons OR electrons

Apes
Never
Poop
Or
Eat

Question 9

What is atomic mass?

Answer 9

The weight of the nucleus, protons plus neutrons

Apes
Mostly
Pick
Peanuts 
Now

Question 10

What is the charge of a neutron?

Answer 10

Neutral (0)

Question 11

What is the charge of a proton?

Answer 11

+1 (positive)

Question 12

What is the charge of an electron?

Answer 12

-1 (negative)

Question 13

How many bonds can carbon make?

Answer 13

4

Question 14

How many bonds can oxygen make?

Answer 14

2

Question 15

How many bonds can hydrogen make?

Answer 15

1

Question 16

How many bonds can Nitrogen make?

Answer 16

3

Question 17

Chemical behavior is dependent on what?

Answer 17

Number of electrons in the valence shell

Question 18

What is an ion?

Answer 18

An atom that has added or lost and electron.

Question 19

What is an isotope?

Answer 19

An atom with the same number of protons but a different number of neutrons.

Question 20

All non-reactive elements have what?

Answer 20

Full valence shells

Question 21

All reactive elements have what?

Answer 21

Incomplete valence shells.

Question 22

H is hydrogen’s what?

Answer 22

Chemical symbol