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Periodic Table
Periodic Table
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Basic Chemistry- Periodic table
Flashcards
24 cards
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Practice quiz
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Questions
24
Answers
1
What is the number of neutrons in Na?
12
22.990
10
11
2
How is the periodic table organized?
decreasing atomic mass
increasing atomic number
increasing number of neutrons
increasing atomic mass
3
What is the following meme referring to?
an element
a compound
a mixture
a molecule
4
What is special about the Hydrogen atom?
it doesn't react with any other elements
acts 2 groups 1 & 7
it can act as part of the halogen group
it's a noble gas but it does not have 8 valence electrons
5
What is the charge and location of an neutron?
inside the nucleus, no charge
inside the nucleus, negative
outside the nucleus, positive
outside the nucleus, no charge
6
Group 1 is known as what?
noble gases
alkali metals
alkaline metals
halogen
7
Which of the following is an element?
Al
O2
Li3
H2O
8
what is the location and mass of an electron?
inside the nucleus, 1 amu
outside the nucleus, 1/1836 amu
outside the nucleus, 1 amu
inside the nucleus, 1/1836 amu
9
Which of the following is a compound?
Na2
H2
Fe
NaFe
10
What is the name of Mg and group does it belong to?
Magnesium, Alkaline Earth Metals
Magnum, Alkaline Earth Metals
Magnime, Metals
Manganese, Alkali Metals
11
Which two subatomic particles have the most in common?
proton and electron
neutron and electron
proton and neutron
electron an neutron
12
Which of the following is a molecule?
Ca
N2
B
H2O
13
How many valence electrons are in Krypton?
18 valence electrons
0 valence electrons
8 valence electrons
5 valence electrons
14
Why are noble gases a non-reactive group?
they have 8 valence electrons
they are nonmetals
they do not have valence electrons
they have 1 valence electrons
15
The atomic number is the same as...
number of atomic mass
number of valence electrons
number of protons
number of neutrons
16
What is the level of reactivity for Alkali metals?
non reactive
most reactive
somewhat reactive
least reactive
17
What is the smallest particle of matter
element
molecule
micromolecule
compound
18
Electrons in the outer shell of an atom are also called
shell electrons
group electrons
the last electrons
valence electrons
19
What do elements in the same period have in common?
same number of electrons
same number of protons
same number of valence electrons
same number of atomic shells
20
What do elements in the same group have in common?
they have the same number of neutrons in their outer shell
they have the same number of electrons in their outer shell
they have the same number of electrons
they have the same atomic mass
21
Which group in the periodic table is most reactive?
halogens
alkaline earth metals
alkali metals
noble gases
22
What is the atomic mass of the Na?
10.990
24
11
22.990
23
In the periodic table a row is also called a...
group
tier
system
period
24
What is the number of protons for Iron?
14
55.845
8
26
