Biology Chapter 2

Question 1

What is matter

Answer 1

Anything that has mass and takes up space

Question 2

What do atoms form together to make

Answer 2

molecules

Question 3

Neutrons are

Answer 3

Neutral

Question 4

Protons are

Answer 4

positive

Question 5

Electrons are

Answer 5

negative

Question 6

What is atomic number

Answer 6

Number of protons

Question 7

What is the mass number

Answer 7

Sum of the number of protons and neutrons

Question 8

Atomic mass is

Answer 8

Average AMU for all isotopes of that atom

Question 9

What are isotopes

Answer 9

Atoms of the same element with different number of neutrons

Question 10

What are radioisotopes

Answer 10

Unstable isotopes and emit energy called radiation

Question 11

What is a molecule

Answer 11

Atoms bonded together

Question 12

What are compounds

Answer 12

Molecules made of different atoms

Question 13

What are covalent bonds

Answer 13

When atoms share electrons to fill their valence shells

Question 14

1-6 on the pH scale

Answer 14

Acid

Question 15

8-14 on pH scale

Answer 15

Base

Question 16

What are fatty acids

Answer 16

Long chains of carbons and hydrogens

Question 17

Saturated fats

Answer 17

Have hydrogen

Question 18

Unsaturated fats

Answer 18

Have no hydrogen

Question 19

Building blocks of proteins

Answer 19

Amino acids

Question 20

Building blocks of Carbs

Answer 20

Sugars

Question 21

Building blocks of lipids

Answer 21

Glycerol and fatty acids