Chapter 2

Question 1

matter

Answer 1

anything that takes up space and has mass

Question 2

element

Answer 2

a substance that cannot be broken down to other substances by chemical reactions

Question 3

compound

Answer 3

a substance containing two or more different elements in a fixed ratio

Question 4

4 elements that make up all life

Answer 4

Carbon, Hydrogen, Nitrogen, Oxygen (HONC)

Question 5

Essential Elements

Answer 5

Elements that are essential to life

Question 6

Trace Elements

Answer 6

Those required by an organism in only minute qualities

Question 7

Isotope

Answer 7

The same atom that has different number of neutrons

Question 8

Potential Energy

Answer 8

Energy that matter possesses because of its location or position

Question 9

Molecule

Answer 9

Two or more atoms held together by covalent bonds

Question 10

Electronegativity

Answer 10

The amount that an atom pulls on its electrons

Question 11

Anion

Answer 11

Negative Ion

Question 12

Cation

Answer 12

Positive ion

Question 13

Van der Waals interactions

Answer 13

Random movements of elections that cause momentary negative and positive poles

Question 14

Photosynthesis Equation

Answer 14

6CO2 + 6H2O –> C6H12O6 +6O2

Question 15

Dynamic Equilibrium

Answer 15

Where a reaction continues but the concentration of products and reactants remain the same