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Flashcards in Ch 2 Chemistry Deck (91)
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1

4 forms of energy

Chemical: Stored in bonds
Electrical: Movement of charged particles
Mechanical: Directly involved in moving matter
Radiant: Travels in waves

2

4 major elements in the human body

HONC:
Hydrogen
Oxygen
Nitrogen
Carbon

3

Mass number

Protons + Neutrons

4

Atomic weight

Average of all Isotopes

5

Compound

2 or more diferent molecules combined

6

3 types of mixture

Solution (homogeneous)
Colloid (hetrogeneous)
Susoension (hetrogeneous)

7

Solution

Transparent and the same throughout. Contain solvent (liquid) and solute (what is desolved).

8

Avogadro's number

6.02X10<23

9

Colloids

Emulsions. clear or milky, larger solutes, scatter light. Do not settle

10

Suspentions

Hetrogeneous.Large visible solutes that settle.

11

Ionic Bond

Complete transfer of electrons, charged particles form

12

Polar Covalent Bonds

Unequal sharing of electons, slight - charge at one end and slight + at the other end. (water is polar)

13

Nonpolar Covalent Bonds

Equal sharing of electrons, charges ballance.

14

Chemical reaction

Whenever bonds are formed broken or rearanged

15

Reduction - Oxydation Reactions

Reduction: Gains electron
Oxidation: Donated electron

16

3 chemical reactions

Synthesis
Decomposition
Exchange

17

Synthesis

Construction, anabolic activities

18

Decomposition

Degradative or catabolic process in the body

19

Exchange

Both decomp and synthesis together

20

Factors affecting chemical reactions

Temperature
Concentration
Particle Size
Catalysts

21

Organic vs. inorganic compounds

Orgainic: Contain Carbon
Inorganinc: No Carbon

22

Water

Universal solvant (Polar)
Heat capacity
Vaporization
Reactivity : Dehydration synthesis and hydrolysis.

23

Salt

An ionic compound containing cations other than H+ and an ions other than (OH-)

24

Electrolytes

All Ions, conduct current in solution.

25

Acids

Release H+, proton donors

26

Base

Take H+, proton acceptors

27

Strong acids

Disasociate completely and irreversible in water

28

Weak acids

Acids that do not completely disociate

29

Why is carbon special?

It is electronuetral
It has 4 vallance electrons

30

Types of carbohydrates

Monsaccharides
Disaccharides
Polysaccharides