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1

Density =
*Common units: (3)

mass (g) /
volume (mL)

*Common units: g/cm^3 g/mL g/L

2

Specific gravity =
*Units:

(D solute) /
(D H20)
*NO UNITS

3

Temperature Formula b/t °F and °C

5F= 9C+160

4

Absolute zero= _ K
K = or ≠ negative values

Absolute zero= 0 K
K ≠ negative values

5

Specific heat =

(amount of heat energy) /
(mass × change in temp)
Cp= Q/(m • ∆T)

6

Cp = Q/(m • ∆T)
Cp = ?
Q = ?

Cp= specific heat Q= amount of heat

7

Specific heat units:
Of water:

J/(g • ℃) or cal/(g • ℃)
4.184 • J/(g • ℃) = 1.0cal/(g • ℃)

8

Heat energy units:
1 cal = _ J

joule (J) and calorie (cal)
1 cal = 4.184 J (exact)

9

“Burning calorie” units:

kJ/g or kcal/g

10

Energy UNITS for Foods:
kilocalories =
kilojoules =
Calorie=

kilocalories = g • kcal/g kilojoules = g • kJ/g Calorie= kcal

11

1 Cal = _ kcal = _ cal
1 Cal = _ kJ = _ J

1 Cal = 1 kcal = 1000 cal
1 Cal = 4.184 kJ = 4184 J

12

Energy Values (in kcal/g and kJ/g) for
Carbohydrate:
Fat:
Protein:

Carbohydrate 4kcal/g 17 kJ/g
Fat 9kcal/g 38 kJ/g
Protein 4kcal/g 17 kJ/g

13

For ions in the same period (row) which is smaller/larger?
More positive =
More negative =

More positive = smaller
More negative = larger

14

An Ionic compound is composed of:
*Reduce?

METAL + NONMETAL
*REDUCE to lowest ratio

15

Covalent (molecular) molecules are composed of:
*Reduce?

NONMETAL + NONMETAL
*DON’T REDUCE

16

Mole =

6.022 × 10^23 items

17

Molar mass =

mass of 1 mole of a substance in g/mo

18

Molar Mass (g) = __ L gas at STP

22.4 L gas at STP

19

if you know the mass of each element you can find the mass composition of each element

Mass composition

20

Percent composition is the

mass of each element • 100 units (g) of compound

21

Mass percent =

(mass of element) /
(total mass compound)× 100%

22

A Combustion reaction is

reaction with O2

23

Combination reactions have
*Is also called?

one product
*A.k.a. synthesis

24

Decomposition reactions have

one reactant

25

Single displacement reactions have

one element + one ionic compound reactants

26

Double replacement reactions have

2 ionic compounds as reactants