WorksheetsChemistry Test Part 2
Total questions: 55
Worksheet time: 1hrs 18mins
This image shows what happens when methane gas (CH4) is burned (reacts with oxygen O2). Which of the following is a reactant?
Methane (CH4)
Water (H2O)
Carbon dioxide (CO2)
none of the above
Any time something burns, it is going through a
chemical change
physical change
A mixture is the result of a physical change because...
The parts can be separated
A new substance is made
There is a chemical reaction
One part of the mixture disappears
A copper penny turning green after a few years is an example of ...
Chemical Change
Physical Change
The substances that go into a chemical reaction are called
reactants
products
molecules
mixtures
The end results of a chemical reaction are called
products
reactants
explosion
a pile of goo
This image shows what happens when methane gas (CH4) is burned (reacts with oxygen O2) to produce carbon dioxide and water. Which of the following is a product?
methane (CH4)
oxygen (O2)
carbon dioxide (CO2)
none of the above
2Fe2O3 + 3C --> 4Fe + 3 CO2
Which is an example of a physical property?
malleability
rusting
reactivity
flammability
Which is a chemical property?
Reactivity
boiling point
density
conductivity
Flammability is a
Chemical property
Physical property
Real property
Fake property
A sour taste is a characteristic of:
acids
bases
neutral
pH scale
Which is a characteristic of a base?
tastes sour
found mostly in foods
feels slippery
turn litmus paper red
A substance that is 3 on the pH scale would be a(n):
acid
base
neutral
solute
Taste bitter
acids
bases
neutral
pH paper
A pH level of 7 indicates
acid
base
neutral
none of the following
Which property is not associated with acids?
Sour taste
strong acids can burn you
turns litmus paper blue
reacts with metals
You test a solution with pH paper, and the paper turns blue. The solution is ______.
neutral
an acid
a base
an acid & a base
Al + O2 --> 2Al2O3
Fe + S --> FeS
The chemical bond between a non-metal and another non-metal will be a ________ bond.
metal
ionic
covalent
polar
The chemical bond between a metal and a non-metal will be a _____ bond.
metal
ionic
covalent
polar
Beryllium and sulfur will form a ______ bond
ionic
covalent
metalloid
Sodium and Bromine will make a _____ bond.
ionic
covalent
metallic
Carbon and Oxygen will make a ___________ bond.
ionic
covalent
metallic
Nitrogen and Oxygen will make a ____________ bond
ionic
covalent
metallic
MgO
ionic
covalent
metallic
NaCl
ionic
covalent
metallic
A bond formed as a result of a transfer of electrons is what type of bond?
Ionic
Covalent
A bond formed as a result of sharing of electrons is what type of bond?
Ionic
Covalent
Phenolphthalein is a pH indicator that turns magenta or bright pink in the presence of what type of solution?
Acid
Base
Neutral
To make lemonade you must mix the powder into water until it dissolves. This is an example of what type of change?
Physical Change
Chemical Change
