Chapter 13/14 Question Preview (ID: 36100)


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How is a chemical change different from a physical change?
a) there is no difference
b) in a chemical change the substance changes into a new substance, in a physical change the substance is still the same substan
c) In a physical change the substance changes into a new substance, in a chemical change the substance stays the same substance
d) in a chemical change the substance changes shape and in a physical change the substance changes size

What does an electron cloud have in it?
a) protons
b) electrons
c) electrons and empty space
d) nothing

Which particle in an atoms nucleus has no charge?
a) proton
b) neutron
c) electron
d) electron cloud

What measurement would change if you traveled from Earth to the Moon?
a) Density
b) Mass
c) Weight
d) Volume

If a scientist knows he has a pure substance that has 4 protons in every atom, then the scientists knows he has a specific__________.
a) element
b) metal
c) liquid
d) gas

Which side of the periodic table are metals found?
a) right
b) left
c) center
d) bottom

You have an element that is brittle, a poor conductor of heat, and cannot be hammered into sheets. What type of element do you have?
a) metal
b) metalloid
c) nonmetal
d) liquid

The chemical formula for carbon is CO2, this tells you that carbon is a__________.
a) compound
b) mixture
c) solution
d) liquid

If you have a mixture of sand and metal fillings, how could you separate the sand from the metal?
a) you could pick each piece of sand out until it is seperated
b) you could put the mixture in water then drain the mixture to separate the sand from metal
c) you could add water to the mixture then boil it to separate the sand from the metal
d) you could use a magnet to attract the metal and separate it from the sand

3. The density of water is 1g/cm3. The density of a solid piece of foam is 0.45 g/cm3. Will the foam sink or float if placed in the water?
a) the foam will float because it is less dense than the water
b) the foam will sink because it is more dense than the water
c) the foam will go up and down because the density is equal to the water
d) the foam will stay in the middle of the container because the density is equal to the water

1. Which kind of elements touch the zigzag line on the periodic table?
a) Metals
b) metalloids
c) gasses
d) liquids

2. If you fold a piece of paper to make a card, will this affect the mass of the piece of paper?
a) the mass will be greater if you fold the paper
b) the mass will be less if you fold the paper
c) no the mass will not change even if the shape of the paper changes
d) the mass will double if you fold the paper

Describe what water vapor is.
a) water condensed into a cloud
b) water droplets on a leaf
c) water in a puddle
d) a gas above boiling water

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