A&P - Chapter 3 (Part 1)

Question 1

What 2 things can a substance be?

Answer 1

1. Element

2. Compound

Question 2

Element

Answer 2

A pure substance made up of only one kind of substance

Question 3

Compound

Answer 3

A substance made up of more than one kind of element

Question 4

What is an example of an element?

Answer 4

Oxygen

- O2

Question 5

What is an example of a compound? (2)

Answer 5

Carbon dioxide

• CO2
  2. Sodium chloride
• NaCL

Question 6

How many elements are there in the human body?

Answer 6

26

Question 7

How many major elements are in the human body?

Answer 7

11

Question 8

What are the most common major elements in the human body? (4)

Answer 8

1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen

Question 9

How many trace elements are in the human body?

Answer 9

15

Question 10

What percent do trace elements make up in the human body?

Answer 10

Less than 0.1% of body weight

Question 11

If a word ends in -ia, what are you referring to?

Answer 11

Referring to the blood

Question 12

If a word ends in -ury, what are you referring to?

Answer 12

Referring to urine

Question 13

Atom

Answer 13

Smallest part of a chemical element that retains the properties of that element

Question 14

What do combined atoms form?

Answer 14

Molecules

Question 15

What are the 3 subatomic particles?

Answer 15

1. Protons
2. Neutrons
3. Electrons

Question 16

What are the components of an atom? (2)

Answer 16

1. Nucleus

2. Energy levels (orbitals)

Question 17

Nucleus

Answer 17

Central core of an atom

Question 18

Energy levels

Answer 18

Regions surrounding the atoms nucleus

Question 19

What do energy levels contain?

Answer 19

Electrons

Question 20

What subatomic particles are associated with the nucleus? (2)

Answer 20

1. Protons

2. Neutrons

Question 21

Atomic number

Answer 21

Total number of protons in the nucleus that help to identify the element

Question 22

Atomic mass

Answer 22

The number of protons + neutrons of the element

Question 23

How many electrons are held in the first orbital closest to the nucleus?

Answer 23

Can hold up to 2 electrons

Question 24

How many electrons can be held in other orbitals (besides the first one)

Answer 24

Can hold up to 8

Question 25

What happens to the energy as you go farther away from the nucleus?

Answer 25

Energy increases | - need energy to jump higher

Question 26

What happens to the energy as you get closer to the nucleus?

Answer 26

Energy decreases | - you are not jumping as high, so you dont need as much energy