Unit 1 Concept 2 - Chemistry of Life

Question 1

what is matter?

Answer 1

anything that has mass and takes of space

Question 2

what is an atom?

Answer 2

things composed to make up matter

Question 3

what are the 6 elements necessary for life?

Answer 3

CHONPS

Question 4

what is a cell?

Answer 4

basic unit of life

Question 5

what is the atomic structure made up of?

Answer 5

protons, neutrons, and electrons

Question 6

what is water?

Answer 6

molecule made up of 2 atoms of hydrogen covalently bonded to 1 atom of oxygen

Question 7

what is a polar molecule?

Answer 7

unequal distribution of changes

Question 8

what is a nonpolar molecule?

Answer 8

no separation of change, no positive or negative poles are formed

Question 9

what are the 5 properties of water?

Answer 9

cohesion, adhesion, high specific heat, less dense as a solid, water is a terrific solvent

Question 10

what is cohesion?

Answer 10

together, molecules that are the same substance, high surface tension

Question 11

what is adhesion?

Answer 11

seperate, 2 different molecules, stronger bonds

Question 12

what is high specific heat?

Answer 12

temperature of water doesn’t change easily

Question 13

what is less dense as a solid?

Answer 13

ice is less dense that liquid water, so life can live under frozen surfaces

Question 14

what are the 3 parts to why water is a terrific solvent?

Answer 14

solution, solute, solvent

Question 15

water is considered the universal ___________

Answer 15

solvent

Question 16

what does hydrophilic mean?

Answer 16

water loving, dissolves easily in water

Question 17

what does hydrophobic mean?

Answer 17

water fearing, doesn’t dissolve in water