Y8 The Periodic Table

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Topic 1

26 Terms

1
Where are the metals and non-metals located on the periodic table?
Metals are found to the left of the stepped line, non-metals to the right.
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2
What are the typical properties of a non-metal?
Brittle, poor conductors of heat and electricity, can be solids, liquids or gases, dull.
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3
What are the typical properties of a metal?
Good conductors of heat and electricity; ductile, malleable, shiny, usually solids (except mercury); high melting and boiling points.
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4

What is a group in a periodic table?

A column on the periodic table.
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5

What is a period on the periodic table?

A row on the periodic table.
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6
What are the names and symbols of the elements in group 1?
Li - lithium; Na - sodium; K - potassium; Rb - rubidium; Cs - caesium.
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7
What is another name for group 1?
The alkali metals.
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8
What happens when lithium is added to water?
Fizzing, moves slowly across the surface, floats.
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9
What happens when sodium is added to water?
Melts into a ball, fizzes, moves quickly across the surface of the water, floats.
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10
What happens when potassium is added to water?
Lots of fizzing, lilac/purple flame; melts into a ball, moves quickly across the surface, floats.
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11
Which gas is produced when a group 1 metal reacts with water?
Hydrogen.
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12
What is the test for hydrogen gas?
Bring a lit splint near the gas; it burns with a squeaky pop.
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13
What is the word equation for Lithium + water?
Lithium + water -> lithium hydroxide + hydrogen.
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14
As you go down group 1, what happens to the reactivity of the elements?
The elements become MORE reactive.
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15
What is another name for group 7?
The halogens.
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16
What are the names and symbols of group 7 elements?
F - Fluorine, Cl - Chlorine, Br - Bromine, I - Iodine, At - Astatine.
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17
As you go down group 7, what happens to the reactivity of the elements?
The elements get LESS reactive.
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18
What is a displacement reaction?
When a more reactive element pushes out a less reactive element from its compound.
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19
What is the color of bromine when it is dissolved in water?
Orange.
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20
What is the color of iodine when it is dissolved in water?
Brown.
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21
What are the state symbols and what do they mean?
(s) = solid; (g) = gas; (l) = liquid; (aq) = dissolved in water.
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22
What is important about the group 0 elements?
They are inert (unreactive).
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23
What does inert mean?
Unreactive.
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24
What happens in the reaction: Lithium bromide + chlorine?
Displacement occurs - chlorine pushes out the bromide.
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25
What is the definition of sublimation?
When a substance changes from a solid to a gas.
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26
What happens to iodine when heated?
It sublimes.
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