A & P Chaper 2 Basic Chemistry

Question 1

Matter

Answer 1

Anything that occupies space and has mass

Question 2

energy

Answer 2

has no mass and does not take up space Kinetic energy is when energy is actually doing work. Potential energy is inactive energy or stored energy.

Question 3

Forms of energy

Answer 3

Chemical energy, electrical energy, mechanical energy, radiant energy

Question 4

elements

Answer 4

matter than can nit be broken down into simpler substances by ordinary chemical methods

Question 5

what 4 elements make up the bulk of living matter?

Answer 5

Carbon, Oxygen, hydrogen, nitrogen

Question 6

atomic number

Answer 6

number that is given that is equal to the number of protons an atom contains

Question 7

atomic mass

Answer 7

sum of all the mass of the protons and neutrons in the nucleus

Question 8

atomic weight

Answer 8

???

Question 9

isotopes

Answer 9

isotopes have same number of protons and electrons but vary in the number of neutrons.

Question 10

compound

Answer 10

when 2 or more different atoms combine into a molecule

Question 11

electron shells or energy levels

Answer 11

atoms have between 1 and 7 shells but the outer shell, called the valence shell will determine it’s bonding properties

Question 12

ionic bonds

Answer 12

form when the electroms of one atom completely transfer from one atom to another

Question 13

covalent bonds

Answer 13

molecules in which atoms share electrons

Question 14

hydrogen bonds

Answer 14

weak bonds are formed when a hydrogen bonds with electron hungry nitrogen or oxygen

Question 15

synthesis reactions

Answer 15

occur when 2 or more atoms or molecules combine to form a more complex molecule, they are energy absorbing reactions

Question 16

decomposition reactions

Answer 16

occur when a molecule is broken down into smaller molecules, atoms, or ions

Question 17

exchange reactions

Answer 17

involve both synthesis and decomposition reactions