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Year 9 Elements 1 to 20 Flashcards | StudBud
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Year 9 Elements 1 to 20
Year 9 Elements 1 to 20
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Review of some properties of the first 20 elements
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Halogens exist in what state at room temperature?
Liquid
All three
Solid
Gass
2
To which group do Helium, Neon and Argon all belong?
Noble Gases
Alkali Metals
Alkaline Earth Metals
Halogens
3
Why are Noble Gases stable?
Their atomic numbers are divisible by 2
They have a full outer electron shell/cloud
They are on the right side of the periodic table
They are in gas state
4
How many valence electrons (in the outer shell/cloud) do Noble Gases have?
10
8
1
12
5
EXAMPLE: What is the symbol for the element Hydrogen?
1
Hydrogen
H
H2
6
"C" is the symbol for what element?
Cobalt
Carbon
Copper
Chlorine
7
Which group contains the most reactive metals?
Group 2
Group 18
Group 1
Group 17
8
Group 1 elements (Alkali metals) bond well with which group of elements?
Group 17 (Halogens)
Group 18 (Noble Gases)
Metalloids
Group 2 (Alkaline Earth Metals)
9
How many electron shells does Calcium use?
4
40
2
20
10
What is a well known use for the combustion reaction (burning) of Alkaline Earth Metals?
Fireworks
Metal forging
Flints and lighters
Explosives
11
If a gas is less dense than air, it is:
Heavier, so will float
Lighter, so will float
Lighter, so will sink
Heavier, so will sink
12
Which of the following elements are
NOT
an Alkali Metal?
Lithium
Potassium
Hydrogen
Sodium
13
What element has an atomic mass of 16?
Lithium
Sulfur
Oxygen
Carbon
14
Which group has 4 valence electrons (in the outer-most cloud/shell)?
Non-metals
Group 14
Group 4
Transition Metals
15
Beryllium, Magnesium and Calcium are members of which group?
Alkaline Earth Metals
Transition Metals
Non-metals
Metalloids
