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8th Grade Final 2013C
Test Description: Part 3 of 3 tests.
Instructions: Answer all questions to get your test result.
1) #19- Table sugar and table salt are examples of
A
mixtures
B
pure substances
C
atoms
D
elements
2) #20- Which of the following is NOT an example of a chemical change?
A
gas burning on a stove
B
using electricity to break down water into hydrogen and oxygen
C
rust forming on an iron fence.
D
salt dissolving in water
3) #21- Lemonade consists of several substances that are NOT chemically combined, so lemonade is classified as a(n)
A
pure substance
B
compound
C
mixture
D
element
4) #22- In general, which of the following statements about metals is true?
A
Metal need to be stored in a sealed container for safty.
B
Metals are highly reactive substances.
C
Metals show a wide range of chemical properties.
D
Metals do not react with oxygen.
5) The period number is also the same number as the
A
the number of Neutron shells.
B
number of electron energy shells.
C
the number of electrons in each shell.
D
the number of electrons in the nucleus.
6) #24- The elements that do not ordinarily form compounds are
A
Carbon family elements
B
Metals
C
Noble gases
D
Halogens
7) Synthetic elements are
A
plastics
B
made from oil
C
Man made, not found in nature
D
fabrics for clothes
8) the name of the group of elements along the stair shape part of the Periodic Table are
A
Actinides
B
Lanthanides
C
Alkali group
D
Metalloids
9) The periodic table is set up according to
A
The number of protons in an element and the elements in groups have similar properties.
B
by Alphabetically
C
because of how much each costs
D
to the way they look
10) Why do some of the symbols not match the name of elements on the Periodic Table of Elements?
A
Mendeleev wanted to mess with us.
B
Because they use the Latin or old world name of the element.
C
to be more challenging.
D
They already had that name taken
*select an answer for all questions
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