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English 18 Public

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#Multiple choice #January

January is derived from what city?

Washington D.C.

Parish

London

Rome

15

Janus is the god of what?

beginnings

endings

doorways

15

In Latin January is for...

Cold

exit

doorway

Janus

15

How many days are in January?

28

31

30

10

What is the birthstone of January?

Pearl

Garnet

Diamond

15

January's zodiac signs are?

capricorn and aquarius

scorpio and cancer

taurus and libra

25

Which statement is correct about exothermic reaction?

Release energy in the form of heat or light

Chemical equation: Reactants + Energy→ Products

Produces a decrease in temperature

Instant coldpack is an application of an exothermic reaction

25

List 2 factors that affect to the rate of a reaction.

Concentration, Surface area, Temperature, Catalyst

20

What is the denotation of the number of moles of 1 substance?

n

10

Which formula is INCORRECT?

n = m : M

m = n x M

M = n x m

n = V : 24.79

15

Write the formula to calculate the molar mass of CaCO3.

M(CaCO3) = M(Ca) + M(C) + 3M(O)

15

Dissolve sugar into water. Which is solute?

water

sugar

10

Dissolve salt into water. Water is called...

solubility

solution

solute

solvent

15

What is indicator?

A compound that changes color at a specific pH value or in the presence of a particular substance

25

What gas does not cause acid rain?

NOx

SO2

H2

CO2

15

What kind of oxide is calcium oxide (CaO)?

amphoteric oxide

acidic oxide

neutral oxide

basic oxide

15