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Atoms and the Periodic Table
Atoms and the Periodic Table
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#8thgradescience #periodictable #atomicstructure
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1
Which statement best describes the positions of the two elements in the periodic table?
In the same group with R just above Q.
In the same group, with Q at the top and R at the bottom.
In the same period, with R the first element and Q the last.
Side by side with Q to the left of R.
2
The compound in this group.
O
C
Co
CO
3
This period 3 element is found only as single uncombined atoms in our atmosphere.
Ar
I
Si
Kr
4
Which statement accurately describes atoms of tin?
Tin atoms have 68 electrons.
Tin atoms have five valence electrons.
Tin atoms have 50 protons.
Tin atoms have 119 neutrons.
5
Why iron's symbol is Fe.
The symbol is based on its Latin name.
Iron used to be spelled with fe.
It's based on its Greek name.
The person who discovered it picked the symbol.
6
This period 5 element reacts similarly to oxygen.
At
Te
Po
Cr
7
The year the periodic table was first developed.
1869
1896
1986
1689
8
The symbol and number of valence electrons for this element.
Sr, 2
Sr, 38
Sn, 38
Sn, 2
9
What is the difference between the number of electrons in an atom of Rh and an atom of Ga?
45
76
14
31
10
This actinide series element is named after the father of the periodic table.
Md
Rf
No
Es
11
This element burns with a green flame.
S
Mg
B
Na
12
This element is the largest of the naturally occurring elements.
Pu
Rg
No
U
13
Which student's responses are correct?
Student 4
Student 2
Student 1
Student 3
14
This transition element is one of the few that is a liquid at room temperature.
Os
Mr
Hg
Pd
15
This is a model of:
B
Be
He
Li
16
This is a model of element:
Li
B
Be
He
17
The subatomic particle has mass and a charge.
neutrino
neutron
electron
proton
18
This halogen has 5 electron shells.
I
Cl
At
Xe
19
Which of these two elements will react similarly?
K and Ca
K and Na
K and Cl
K and S
20
Which of these elements will have similar reactivities?
B, Si, and As
C, N, and O
N, Er, and DY
O, S, and Te
21
This particle has a mass of 1 amu and no charge.
neutrino
neutron
electron
proton
22
This subatomic particle has no significant mass.
neutron
neutrino
proton
electron
23
How many protons, neutrons, and electrons in a stable neutral atom of bismuth (Bi)?
83 protons, 125 neutrons, 83 electrons
83 protons, 83 neutrons, 125 electrons
83 protons, 83 neutrons, 126 electrons
83 protons, 126 neutrons, 83 electrons
24
Explain why elements in the same groups will have similar chemical properties.
They have the same number of energy shells.
They have similar atomic structures.
They don't behave similarly if they are in the same group.
They have the same number of valence electrons.
25
This element causes an odor of rotten eggs when it reacts with O.
Su
Si
S
Sc
26
An unknown element is malleable, shiny, and loses electrons in a chemical reaction. It is a:
Metalloid
Metal
Non metal
None of these
27
This half of table salt is a poisonous gas in its pure state.
K
Na
Cl
Br
28
A brittle element that is a good conductor of electricity is most likely:
Metal
None of these
Non metal
Metalloid
