012 Test Modules 5-6 Flashcards Preview

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Flashcards in 012 Test Modules 5-6 Deck (70)
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1

Anything that has mass and takes up space

Matter

2

An explanation or representation of something that cannot be seen

Model

3

A collection of atoms that all have the same number of protons

Element

4

Chemicals that result from atoms linking together

Molecules

5

A change that affects the appearance but not the chemical makeup of a substance

Physical change

6

A change that alters the makeup of the elements or molecules of a substance

Chemical change

7

One of three forms - solid, liquid, or gas - which every substance is capable of attaining

Phase

8

The random motion of molecules from an area of high concentration to an area of low concentration

Diffusion

9

A measurement of how much solute exists within a certain volume of solvent

Concentration

10

A membrane that allows some molecules to pass through but does not allow other molecules to pass through

Semipermeable membrane

11

The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration

Osmosis

12

A substance that alters the speed of a chemical reaction but is not used up in the process

Catalyst

13

A molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and/or phosphorous

Organic molecule

14

The process by which living organisms produce larger molecules from smaller ones

Biosynthesis

15

Two different molecules that have the same chemical formula

Isomers

16

Simple carbohydrates that contain 3 to 10 carbon atoms

Monosaccharides

17

Carbohydrates that are made up of two monosaccharides

Disaccharides

18

Carbohydrates that are made up of more than two monosaccharides

Polysaccharides

19

A chemical reaction in which molecules combine by removing water

Dehydration reaction

20

Breaking down complex molecules by the chemical addition of water

Hydrolysis

21

Lacking any affinity to water

Hydrophobic

22

A lipid made from fatty acids that have no double bonds between carbon atoms

Saturated fat

23

A lipid made from fatty acids that have at least one double bond between carbon atoms

Unsaturated fat

24

A bond that links amino acids together in a protein

Peptide bond

25

A strong attraction between hydrogen atoms and certain other atoms (usually oxygen or nitrogen) in specific molecules

Hydrogen bond

26

The transport of dissolved substances into cells

Absorption

27

The breakdown of absorbed substances

Digestion

28

The breakdown of food molecules with a release of energy

Respiration

29

The removal of soluble waste materials

Excretion

30

The removal of nonsoluble waste materials

Egestion