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Flashcards in Atoms & Water Deck (58):
0

This is the study of matter.

Chemistry

1

We study chemistry in biology because...

All living things are made of matter!

2

This is anything that has mass and occupies space.

Matter

3

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

Atom

4

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

Element

5

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

Electron

6

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

Neutron

7

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

Proton

8

This is an atom with an different number of neutrons.

Isotope

9

When two or more elements are combined in fixed proportions.

Compound

10

Compounds are held together with:

Chemical bonds

11

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

Different

12

This type of chemical bond shares electrons forming molecules.

Covalent

13

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

Ionic

14

Ions are atoms with a:

Charge

15

This is the ability to do work.

Energy

16

Chemical energy in biology is called

Metabolism

17

Mechanical energy in biology is

Motion...muscles at work!

18

Electrical energy in biology is:

Neurology (nerve cells)

19

Thermal energy in biology is:

Heat

20

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

Solid

21

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

Gas

22

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

Liquid

23

This kind of reaction absorbs/takes in energy.

Endothermic

24

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

Chemical reaction.

25

This type of reaction releases/gives off energy.

Exothermic

26

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

Activation

27

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

Catalyst

28

What are the two parts of a Redox reaction?

Oxidation and reduction

29

This is the loss of an electron

Oxidation

30

This is the gain of an electron

Reduction

31

Water is called a polar molecule because of its:

Uneven distribution of electrons

32

Because water is polar it has a:

Charge. O side is - and H side is +

33

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

Hydrogen

34

This is the property of water sticking to other water

Cohesion

35

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

Adhesion

36

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

Surface tension

38

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

Capillarity or Capillary Action

38

Temperature regulation is important to living things because

Water won't change temperature quickly

39

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

Temperature regulation due to high specific heat.

40

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

Expand

41

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

Float

42

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

Solutions

43

This does the dissolving

Solvent

44

This gets dissolved

Solute

45

This is when there is less solute than solvent

Unsaturated

46

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

Saturated

47

This is when there is way too much solute

Super-saturated

48

Water can __________, making H+ and OH-

Ionize

49

OH- is called the

Hydroxide ion

50

H+ is called the

Hydroium ion (Hydrogen ion)

51

This is a substance that forms H+ ions in solution

Acid

52

This is a substance that forms OH- ions in solution

Base

53

This measures the concentration of ions in a solution

pH

54

0-6 is

Acid

55

7 is

Neutral

56

8-14 is

Base

57

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

Buffers