Florida Science Grade 6

Section 2: The Simplest Matter

Section 2 Self-Check Quiz-Eng.

1.
A(n) __________ is a material that cannot be broken down into simpler materials by ordinary means.
A)element
B)mixture
C)metal
D)compound
2.
An example of a synthetic element is __________ .
A)nitrogen
B)plutonium
C)aluminum
D)iron
3.
The __________ is a chart created by chemists to organize the elements.
A)mass number
B)periodic table
C)isotope
D)metalloid list
4.
An element's atomic number is the number of __________ in the nucleus of each atom of that element.
A)neutrons
B)protons
C)electrons
D)positrons
5.
The atomic number of manganese is 25; its mass number is 55. How many neutrons does an atom of manganese have in its nucleus?
A)25
B)30
C)55
D)80
6.
Atoms of the same element that have different numbers of neutrons are called __________.
A)isotopes
B)metals
C)nonmetals
D)metalloids
7.
Which of the following best describes the three general groups of elements?
A)metals, metalloids, and nonmetals
B)metals, nonmetals, and noble gases
C)metals, metalloids, and synthetics
D)solid, liquid, and gas
8.
Which of the following is a characteristic of most metals?
A)dull in appearance
B)shiny luster
C)poor conductors of electricity
D)gases at room temperature
9.
Which of the following elements would make the best electrical wire?
A)carbon
B)fluorine
C)selenium
D)copper
10.
What group contains elements that are gases at room temperature?
A)metals
B)metalloids
C)isotopes
D)nonmetals
11.
The atomic mass of an element is __________ of that element.
A)the average mass of an atom
B)the number of protons plus the number of neutrons of an atom
C)the number of protons in each atom
D)the number of electrons in each atom
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