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Unit 9 Review Flashcards | StudBud
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Unit 9 Review
Unit 9 Review
20 terms
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The atom and periodic table of elements
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Metals tend to be....
good conductors
brittle
gases
dull
2
The three main groups of elements are the metals, nonmetals, and.....?
alkali metals
inert gases
radioactive isotopes
metalloids
3
Why is Carbon located to the right of Boron on the periodic table?
It has fewer protons
It doesn't have protons
It has more protons
It doesn't have any neutrons
4
Chemical symbol for gold.
Cu
Pb
Au
Ag
5
Nitrogen's atomic number is 7. This means that Nitrogen has....
a total of 7 protons and neutrons
7 protons in its nucleus
7 neutrons in its nucleus
7 valence electrons
6
The amount of matter in an object?
weight
electron cloud
valence electron
mass
7
What is the mass of an element with 10 protons, 11 neutrons, and 10 electrons?
10
20
21
8
How is the modern periodic table arranged?
its atomic mass
the number of valence electrons
its chemical symbol
the number of protons in its nucleus
9
Electrons that are located on the outermost energy level....
valence electrons
isotopes
atomic mass
inert gases
10
It is nearly impossible to determine an electron's exact....
charge
mass
size
position
11
Chemical symbol for silver.
Ag
Au
Pb
Si
12
What is an atoms nucleus made of?
protons and neutrons
protons and electrons
only protons
anodes
13
Each column in the periodic table is called a.....
element
gene
period
group
14
How many neutrons does Beryllium have?
9
4
5
13
15
How many neutrons does Argon have?
39
40
22
18
16
Which atomic symbol is written correctly?
n
Kr
al
ZN
17
Why do atoms have no electric charge?
have equal numbers of protons and neutrons
equal number of charged and noncharged particles
have equal numbers of protons and electrons
have neutrons in the nucleus
18
Chemical symbol for Lead
Cu
Le
Fe
Pb
19
Chemical symbol for iron
I
Fe
Pb
Ir
20
Potassium had an atomic number of 19 and a mass of 39. How many neutrons does it have?
19
58
20
39
