Y8 The Periodic Table

Topic 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.

What are the typical properties of a non-metal?

Brittle, poor conductors of heat and electricity, can be solids, liquids or gases, dull.

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.

What is a group in a periodic table?

A column on the periodic table.

What is a period on the periodic table?

A row on the periodic table.

What are the names and symbols of the elements in group 1?

Li - lithium; Na - sodium; K - potassium; Rb - rubidium; Cs - caesium.

What is another name for group 1?

The alkali metals.

What happens when lithium is added to water?

Fizzing, moves slowly across the surface, floats.

What happens when sodium is added to water?

Melts into a ball, fizzes, moves quickly across the surface of the water, floats.

What happens when potassium is added to water?

Lots of fizzing, lilac/purple flame; melts into a ball, moves quickly across the surface, floats.

Which gas is produced when a group 1 metal reacts with water?

Hydrogen.

What is the test for hydrogen gas?

Bring a lit splint near the gas; it burns with a squeaky pop.

What is the word equation for Lithium + water?

Lithium + water -> lithium hydroxide + hydrogen.

As you go down group 1, what happens to the reactivity of the elements?

The elements become MORE reactive.

What is another name for group 7?

The halogens.

What are the names and symbols of group 7 elements?

F - Fluorine, Cl - Chlorine, Br - Bromine, I - Iodine, At - Astatine.

As you go down group 7, what happens to the reactivity of the elements?

The elements get LESS reactive.

What is a displacement reaction?

When a more reactive element pushes out a less reactive element from its compound.

What is the color of bromine when it is dissolved in water?

Orange.

What is the color of iodine when it is dissolved in water?

Brown.

What are the state symbols and what do they mean?

(s) = solid; (g) = gas; (l) = liquid; (aq) = dissolved in water.

What is important about the group 0 elements?

They are inert (unreactive).

What does inert mean?

Unreactive.

What happens in the reaction: Lithium bromide + chlorine?

Displacement occurs - chlorine pushes out the bromide.

What is the definition of sublimation?

When a substance changes from a solid to a gas.

What happens to iodine when heated?

It sublimes.