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Atomic Structure and the Periodic Table Flashcards | StudBud
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Atomic Structure and the Periodic Table
Atomic Structure and the Periodic Table
20 terms
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#UWCSEA #Grade7 #Chemistry
Flashcards
20 cards
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Questions
20
Answers
1
What are the values for A and B?
A=1, B=1
A=1, B=0
A=2, B=0
A=2, B=-1
2
What is the atomic mass of the element described here?
9
16
17
8
3
Which group is the highlighted element in?
2
5
1
6
4
When using the periodic table, the ATOMIC NUMBER for an element refers to what?
The mass of the nucleus
The number of electrons
The number of neutrons
The number of protons
5
What are the values for A, B and C?
A=17, B=19, C=19
A=16, B=0, C=19
A=16, B=19, C=16
A=16, B=16, C=16
6
In which period is helium (He) found?
2
8
1
0
7
What is the mass of this atom?
36
38
0
20
8
Which element is described here:
element #17 (chlorine)
element #9 (fluorine)
element #16 (sulphur)
element #8 (oxygen)
9
How many electrons does nitrogen have on the outer shell?
7
5
2
1
10
Which element is shown?
Helium
Lithium
Beryllium
Hydrogen
11
Which subatomic particles are found in the nucleus?
protons and neutrons
neutrons and electrons
protons and electrons
only electrons
12
Why is this element a 'Neutral Atom'?
Same number of protons and electrons
Same number of protons and neutrons
Same number of neutrons and electrons
more electrons than protons
13
How many energy levels (shells) does nitrogen have?
5
it depends
2
1
14
What is the atomic mass of this fluorine atom?
10
18
9
19
15
What is the total charge?
0
-1
+1
-2
16
What is the total charge?
+2
0
10
-2
17
How many neutrons in this Argon atom?
38
18
8
20
18
What is the charge?
10
-2
+2
0
19
What is the atomic number for the element shown?
7
3
4
10
20
Group 7 elements
Are reactive and need one electron to fill the outer shell
Are not very reactive and have 7 valence electrons
Are very reactive and have 7 electron shells
Are not very reactive and have 7 electron 'shells'
