Campbell Biology Ch 2.1

Front 1

What are the primary elements

and percent do they make up of

living matter?

Back 1

1. Hydrogen (H)

2. Carbon (C)

3. Nitrogen (N)

4. Oxygen (O)

96%

Front 2

What are the 4% elements that

account for an organism's mass?

Back 2

1. Phosphorus (P)

2. Sulfur (S)

3. Calcium (Ca)

4. Potassium (K)

Front 3

Element

Back 3

cannot be broken down to other substances by chemical rxn’s

Front 4

What particles are elements composed?

Back 4

neutrons, protons, electrons

Front 5

Compound

Back 5

Substance consisting of 2 or more

different elements combined

in a fixed ratio

Front 6

Matter is made up of?

Back 6

Elements

Front 7

Matter

Back 7

Anything that takes up space and has mass

Front 8

Essential Elements

Back 8

- 92elements- 25 you can’t live without

- C, O, H, N

- Trace elements

Front 9

What is the smallest unit of matter

that still retains the properties of an element

Back 9

Atom

Front 10

Elements made up of atoms

with a specific # of what?

Back 10

subatomic particles

(protons)

Front 11

Matter Flow

Back 11

Matter --> Elements --> Atoms --> P, N+, e-