Read your answers and compare them with mine!
Look at the pages listed below: STUDY STUDY STUDY !
1. List 3 ways that you can describe matter.
a. Mass
b. Weight
c. Volume
d. Density
e. Buoyancy
2. What forms can matter have?
a. Solid
b. Liquid
c. gas
3. How can you prove that there are things too small to see?
a. One example is a flat basketball, use a pump to put air (we can’t see
air) into it and it will inflate.
4. What is matter made of?
a. Elements
5. What do we use microscopes for?
a. For seeing things that we cannot see very well with just our eyes, too
small for us to see
6. What are the most common elements in the
a.
Atmosphere—Nitrogen 78% , Oxygen 21%
b.
Crust—Aluminum 8%, Iron 5 %, Calcium 4%
c.
Ocean—85% Oxygen, Hydrogen 11%
d.
In animals—Oxygen 63 %, Carbon 19% and Hydrogen 10%
e.
In plants—Oxygen 76%, Carbon 11% and Hydrogen 10%
7.Give your definition for metals.
a. metal—are materials that shine when polished, conduct heat and electricity
well, and can be shaped without breaking. The more the element shows these
properties the more metallic it can be.
8. Give 4 different examples of how we use metals.
A. in wire (copper wire)
b. glasses frames
c. car bodies
d. chairs
e. braces
9. What does corrosion do to a metal? Corrosion will cause the metal to rust and
flake away.
10. Does corrosion affect plastic? Explain your answer. No, plastic is a not a metal,
corrosion only happens with metals.
11. Does corrosion affect wood? Explain your answer. No wood is not a metal,
corrosion only happens with metals.
12. What does it mean to be malleable? Malleable means have the ability or be bent,
flattened or hammered without breaking.
13.ductility is the ability to be stretched/pulled into thin wires without breaking.
14. Can plastics be stretched/pulled into thin wires? Why? No plastics will break. The
material that plastics are made from does not allow for stretching and thinning.
15. Why do we use metal instead of other materials in buildings? The properties of
metals allow us to use them. Those properties are ductility, malleablility, strong and
flexible.
16. Compare metals, nonmetals and metalloids.
Metals are materials that shine when polished, conduct heat and electricity
well, and can be shaped without breaking. The more the element shows these
properties the more metallic it can be. Nonmetals have properties that are opposite
to those of metals. They are poor conductors of heat and electricity, lack luster.
Nonmetals generally break or crush. Metalloids have properties similar to both
metals and non-metals. These properties include looking like a metal only they are
not shiny; they are also not as malleable or ductile like nonmetals.
17. Give 4 examples (each) of how metalloids and nonmetals are used daily.
Metalloids—arsenic (poison, rat poison) silicon (semiconductors for
computers, braces, televisions)
Nonmetals—iodine (salt), Oxygen (we breathe) Nitrogen (we breathe),
Carbon (coal)
18. How can we prove there is something there when we cannot see it? Give a
detailed answer!
Think about the following ideas: Can we use them to prove something is there if we
can’t see it?
a. flat basketball
b. syringe (used to give shots)
c. beachball
d. water bottle
Assign On: 9/22/2014