Free Printable Chemistry 2.0

1.

$CH_4+2O_2→CO_2+2H_2O$

The reactants in the methane combustion formula are:

a)

$CH_4$

b)

$CO_2+2H_2O$

c)

$CH_4+2O_2$

d)

$CO_2$

2.

$CH_4+2O_2→CO_2+2H_2O$

The products in the methane combustion formula are:

a)

$CH_4$

b)

$CO_2+2H_2O$

c)

$CH_4+2O_2$

d)

$CO_2$

3.

During a chemical reaction, you notice bubbling and fizzing in the flask. You use the Burning Splint to confirm the type of gas that was created. The Burning Splint continues to burn so the gas is ________________.

a)

ammonia

b)

carbon dioxide

c)

hydrogen

d)

oxygen

4.

During a chemical reaction, you notice bubbling and fizzing in the flask. You use the Glowing Splint to confirm the type of gas that was created. The Glowing Splint does not ignite so the gas is ________________.

a)

ammonia

b)

carbon dioxide

c)

hydrogen

d)

oxygen

5.

You took the temperature of a substance before a chemical reaction and it was 24 degrees Celsius. You then took the temperature of the products and it was 45 degrees Celsius. The type of chemical reaction is called ________________.

a)

exothermic

b)

cryptothermic

c)

endothermic

d)

hypothermic

6.

You took the temperature of a substance before a chemical reaction and it was 34 degrees Celsius. You then took the temperature of the products and it was 22 degrees Celsius. The type of chemical reaction is called ________________.

a)

exothermic

b)

cryptothermic

c)

endothermic

d)

hypothermic

7.

You are interested in finding the ph of a substance and you use the phenol red to see if it is an acid, a base, or neutral. You take a sample of the substance and add it to the phenol red and it turns pink. The substance is considered a ____________.

a)

acid

b)

base

c)

neutral

d)

denser than water

8.

Water forms when

a)

two hydrogen atoms share neutrons with one oxygen atom.

b)

two helium atoms share protons with an oxygen atom

c)

one hydrogen atom shares an electron with an oxygen atom.

d)

two hydrogen atoms share valence electrons with one oxygen atom.

9.

Select ALL of the examples of a chemical reaction:

a)

steel wool burning

b)

ice melting

c)

a puddle evaporating

d)

copper pipe rusting

e)

fireworks

10.

What kind of bonds are formed when hydrogen and oxygen share electrons to make water?

a)

isotonic bonds

b)

covalent bonds

c)

ionic bonds

d)

metallic bonds

11.

Electrons that exist on the outermost shell of an atom are called _______________.

a)

valence electrons

b)

ions

c)

isotopes

d)

neutrons

12.

The nucleus of an atom consists of the _______________ and ________________.

a)

neutrons, electrons

b)

protons, valence electrons

c)

electrons, protons

d)

protons, neutrons

Chemistry 2.0

Total questions: 12

Worksheet time: 25mins

Similar Resources on Wayground