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English 18 Public

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#Multiple choice #January

January is derived from what city?

Parish

London

Rome

Washington D.C.

15

Janus is the god of what?

endings

doorways

beginnings

15

In Latin January is for...

Cold

exit

Janus

doorway

15

How many days are in January?

30

31

28

10

What is the birthstone of January?

Diamond

Garnet

Pearl

15

January's zodiac signs are?

capricorn and aquarius

taurus and libra

scorpio and cancer

25

Which statement is correct about exothermic reaction?

Produces a decrease in temperature

Chemical equation: Reactants + Energy→ Products

Release energy in the form of heat or light

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?

M = n x m

m = n x M

n = m : 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?

sugar

water

10

Dissolve salt into water. Water is called...

solute

solution

solubility

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?

CO2

SO2

NOx

H2

15

What kind of oxide is calcium oxide (CaO)?

basic oxide

amphoteric oxide

acidic oxide

neutral oxide

15