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Atoms and the Periodic Table
Which is a property of metalloids?
What changes in an isotope?
Atoms and the Periodic Table
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1
What changes in an isotope?
neutrons
nothing
electrons
protons
2
Which is a property of metalloids?
brittle
poor conductor
ductile
malleable
3
What does the atomic number represent?
The number of neutrons.
The number of electrons.
The number of protons.
The number of protons + electrons.
4
What is a group on the periodic table?
colored boxes
several elements that go together
a vertical column
a horizontal row
5
Which is a property of metals?
dull
poor conductor
malleable
brittle
6
How do you find the number of neutrons in an isotope?
atomic mass- atomic #
atomic # - mass #
mass # - atomic #
7
Which group are Alkali metals and how reactive are they?
group 2 reactive
group 2 unreactive
group 1 reactive
group 1 unreactive
8
What is the smallest piece of matter that keeps its same properties?
atom
proton
pizza
electron
9
If Helium-2 has 2 protons, how many protons does Helium-3 have?
0
3
2
1
10
Where are electrons found?
nucleus
electron space
mixed throughout the electron cloud
in specific levels in an electron cloud
11
What is group 18 called?
transition metals
halogens
noble gases
alkaline earth metals
12
Which group on the periodic table has 2 electrons in its outer level?
alkali metals
alkaline earth metals
13
Which is a property of nonmetals?
non ductile
brittle
good conductor
malleable
14
What change gives ions their charge?
protons
neutrons
electrons
nothing
15
What is mass number?
The mass of the protons + neutrons.
The average mass of all the isotopes of an atom.
The number of protons.
16
How are atoms on the periodic table arranged?
by atomic mass
by the number of electrons
by atomic number
17
What particles are in the nucleus of an atom?
protons and neutrons
electrons
electrons and neutrons
protons and electrons
