Study sets, textbooks, questions
Upgrade to remove ads
C4 - predicting and identifying chemical reactions
Terms in this set (15)
What are the chemical properties of alkaline metals
Low melting and boiling point, low density and soft
Why are alkaline metals highly reactive
They can lose their outer electron really easily
Going down do alkaline metals get more or less reactive?
Do alkali metals react with water?
How many electrons do alkaline metals have on their outer shell?
Write a balanced symbol equation for a reaction between sodium and water
2Li + 2H2O —> 2LiOH + H2
What are the similar properties of halogens
They are diatomic molecules, covalently bonded, their melting and boiling points increases going down the group
At room temperature what is chlorine, bromine and iodine?
Chlorine is a green poisoness gas, bromine is a red/brown liquid and iodine is dark purple crystals
Do halogens become more or less reactive going down the group?
They get less reactive as it becomes harder to attract that one extra electron on to their shell
The melting point of chlorine is -101.5 degrees. Predict whether bromine (Br2) would be a solid, liquid or gas at room temperature. Explain your answer
Bromine would be a solid at this temperature, since melting and boiling points increase going down the group, bromine melting point would be higher than chlorine's
White a balanced symbol equation for the reaction between sodium metal (Na) and iodine (I2)
2Na + I2 —> 2NaI
What is a displacement reaction?
When a more reactive element takes the place of a less reactive element in a compound
What is the experiment to show the reactivity of halogens?
Measure a small amount of halide salt solution in a test tube, add a few drops of halogen solution; shake gently. Colour change = reaction
What reacts with potassium chloride solution
Nothing, no colour change
What reacts with potassium bromide solution?
Chlorine water, orange solution formed
Other sets by this creator
Theme 2 - changing environments
AIC inspector Goole key quotes
AIC Gerald Croft key quotes
AIC eric key quotations