Atoms & Water

Question 0

We study chemistry in biology because…

Answer 0

All living things are made of matter!

Question 1

This is the study of matter.

Answer 1

Chemistry

Question 2

This is anything that has mass and occupies space.

Answer 2

Matter

Question 3

This is the simplest particle of matter that still retains all the properties of that substance.

Answer 3

Atom

Question 4

This is a substance that cannot be broken down into anything simpler and contains only one type of atom.

Answer 4

Element

Question 5

This particle is negatively charged, very small, moves fast, and is found in orbitals ( based on energy level)around the nucleus.

Answer 5

Electron

Question 6

This particle has no charge, contributes to the mass of an atom, and is found in the nucleus.

Answer 6

Neutron

Question 7

This particle has a positive charge, determines the atomic number, and is found in the nucleus.

Answer 7

Proton

Question 8

This is an atom with an different number of neutrons.

Answer 8

Isotope

Question 9

When two or more elements are combined in fixed proportions.

Answer 9

Compound

Question 10

Compounds are held together with:

Answer 10

Chemical bonds

Question 11

Compounds will have _________ properties from the elements that compose them.

Answer 11

Different

Question 12

This type of chemical bond shares electrons forming molecules.

Answer 12

Covalent

Question 13

This type of bond transfers electron in a “give & take” fashion, making ions.

Answer 13

Ionic

Question 14

Ions are atoms with a:

Answer 14

Charge

Question 15

This is the ability to do work.

Answer 15

Energy

Question 16

Chemical energy in biology is called

Answer 16

Metabolism

Question 17

Mechanical energy in biology is

Answer 17

Motion…muscles at work!

Question 18

Electrical energy in biology is:

Answer 18

Neurology (nerve cells)

Question 19

Thermal energy in biology is:

Answer 19

Heat

Question 20

This state of matter has low energy, definite shape, and definite volume.

Answer 20

Solid

Question 21

This state of matter has high energy, is free to move, so there is really no definite shape or volume.

Answer 21

Gas

Question 22

This state of matter has moderate energy, has a definite volume, but will take the shape of its container.

Answer 22

Liquid

Question 23

This kind of reaction absorbs/takes in energy.

Answer 23

Endothermic

Question 24

This is the process of changing one or more substances into one or more different substances.

Answer 24

Chemical reaction.

Question 25

This type of reaction releases/gives off energy.

Answer 25

Exothermic

Question 26

This is the amount of energy needed to start a chemical reaction.

Answer 26

Activation

Question 27

This is a stimulus that will lower the activation energy needed for a reaction.

Answer 27

Catalyst

Question 28

What are the two parts of a Redox reaction?

Answer 28

Oxidation and reduction

Question 29

This is the loss of an electron

Answer 29

Oxidation

Question 30

This is the gain of an electron

Answer 30

Reduction

Question 31

Water is called a polar molecule because of its:

Answer 31

Uneven distribution of electrons

Question 32

Because water is polar it has a:

Answer 32

Charge. O side is - and H side is +

Question 33

Water forms this kind of bond due to the slight + attraction to something with a slight -.

Answer 33

Hydrogen

Question 34

This is the property of water sticking to other water

Answer 34

Cohesion

Question 35

This is the property of water sticking to other substances/surfaces

Answer 35

Adhesion

Question 36

Cohesion gives water __________, which allows some things to walk on water...also makes belly flops hurt

Answer 36

Surface tension

Question 38

Adhesion makes water extremely sticky, this is apparent in the property of __________, where water moves upward against gravity.

Answer 38

Capillarity or Capillary Action

Question 38

Temperature regulation is important to living things because

Answer 38

Water won't change temperature quickly

Question 39

This is water's ability to absorb large quantities of heat.

Answer 39

Temperature regulation due to high specific heat.

Question 40

When forming a solid, water is weird...it will...

Answer 40

Expand

Question 41

Ice is less dense than water. This helps living things because ice can _______ in water.

Answer 41

Float

Question 42

Water is able to form many ________, due to its ability to combine with many other substances.

Answer 42

Solutions

Question 43

This does the dissolving

Answer 43

Solvent

Question 44

This gets dissolved

Answer 44

Solute

Question 45

This is when there is less solute than solvent

Answer 45

Unsaturated

Question 46

This is when the solvent has dissolved all the solute, it's balanced

Answer 46

Saturated

Question 47

This is when there is way too much solute

Answer 47

Super-saturated

Question 48

Water can __________, making H+ and OH-

Answer 48

Ionize

Question 49

OH- is called the

Answer 49

Hydroxide ion

Question 50

H+ is called the

Answer 50

Hydroium ion (Hydrogen ion)

Question 51

This is a substance that forms H+ ions in solution

Answer 51

Acid

Question 52

This is a substance that forms OH- ions in solution

Answer 52

Base

Question 53

This measures the concentration of ions in a solution

Answer 53

pH

Question 54

0-6 is

Answer 54

Acid

Question 55

7 is

Answer 55

Neutral

Question 56

8-14 is

Answer 56

Base

Question 57

These are weak acids and bases added to solutions to help control the pH

Answer 57

Buffers