Y8 The Periodic Table

1. On the periodic table where are the metals and the non-metals found?

Metals to the left of the stepped line, non-metals to the right

1. What are the typical properties of a non-metal?

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

1. 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

1. What is a group in a periodic table?

A column on the periodic table

1. What is a period on the periodic table?

A row on the periodic table

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

Li- lithium; Na - sodium; K - Potassium; Rb - Rubidium; Cs - Caesium

1. What is another name for group 1?

The alkali metals

1. Describe the observations when lithium is added to water

Fizzing, moves slowly across the surface, floats

1. Describe the observations when sodium is added to water

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

1. Describe the observations when potassium is added to water

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

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

Hydrogen

1. What is the test for this gas?

1. bring a lit splint near the gas 2. it burns with a squeaky pop

1. What is the word equation for Lithium + water?

Lithium + water -> lithium hydroxide + hydrogen

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

The elements become MORE reactive

1. What is another name for group 7?

The halogens

1. What are the names and symbols of group 7 elements?

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

1. As you go down group 7 – what happens to the reactivity of the elements?

The elements get LESS reactive

1. What is a displacement reaction?

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

1. What are the colours and states of the group 7 elements: fluorine, chlorine, bromine, iodine at room temperature

1. What colour is bromine when it is dissolved in water?

Orange

1. What colour is iodine when it is dissolved in water?

Brown

1. What are the state symbols and what do they mean?

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

1. What is important about the group 0 elements?

They are inert (unreactive)

1. What does inert mean?

Unreactive

1. What happens in this reaction and why? Lithium bromide + chlorine -> ?

Displacement occurs - chlorine pushes out the bromide

Lithium bromide + chlorine -> Lithium chloride + bromine

The solution will turn brown because the bromine is pushed out

1. What is the definition of sublimation?

When a substance changes from a solid to a gas. When iodine is heated it sublimes.