The Chemical Basis Of Life

Question 0

Define Element

Answer 0

Substance that cannot be broken down to other substances by ordinary chemical means

Question 1

Define- Matter

Answer 1

Anything that occupies space and has mass

Question 2

State that the six most common elements in living things are

C, H, N, O, S and P

Answer 2

C-Carbon
H-Hydrogen
N-Nitrogen
O-Oxygen
S-Sulfur
P-Potassium

Question 3

Define compound

Answer 3

Substance consisting of 2 or more different elements combined in a fixed ratio.

Question 4

Atom

Answer 4

smallest unit of matter that still retains the properties of an element

Question 5

Proton

Answer 5

Positive Charge (+)

Question 6

Electron

Answer 6

Negative Charge (-)

Question 7

Nuetron

Answer 7

No Charge

Question 8

Nucleus

Answer 8

atom’s central core

Question 9

Atomic number

Answer 9

number of protons

Question 10

mass number

Answer 10

sum of protons and neutrons in its nucleus

Question 11

Isotope

Answer 11

All the atoms of an element have the same atomic number(number of protons) but some atoms of an element may differ in mass number(sum of protons and neutrons in its nucleus)

Question 12

Ion

Answer 12

an atom or molecule with an electrical charge resulting from a gain or loss of one or more electrons

Question 13

Ionic Bond

Answer 13

Ion #1 gives up an electron(making it positive) to ion#2(making it negative) and the the 2 attract. TRANSFER

Question 14

Covalent Bond

Answer 14

Two atoms share one or more pairs of outer shell electrons.

Question 15

Electromagnetically

Answer 15

How much electrons want to be near that element

Question 16

Polar Molecule

Answer 16

unequal distribution of charges

Question 17

Non Polar Molecule

Answer 17

A non-polar molecule is one that the electrons are distributed more symmetrically