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WorksheetsGroup Elements
Total questions: 15
Worksheet time: 16mins
Which one of the following names does not correspond to a group of elements in the periodic table?
Alkali
Group VII
Alloys
Halogens
Which of the following observations does not apply to group I elements?
They are relatively soft metals
The corrode quickly when exposed to air
They react very quickly with water releasing hydrogen gas
They produce acidic solutions in reaction with water
Which statement about the alkali metals is correct?
Potassium is more dense than lithium
Lithium has a higher density than sodium
Potassium is less reactive than sodium
The melting point of sodium is higher than lithium
The reactivity of halogens decreases moving down the group. Which statement explains this observation?
Decreasing distance between the nucleus and outer shell makes it easier for the atom to attract electrons
Increasing distance between the nucleus and outer shell makes it easier for the atom to attract electrons
Decreasing distance between the nucleus and outer shell makes it harder for the atom to attract electrons
Increasing distance between the nucleus and outer shell makes it harder for the atom to attract electrons.
The reactivity of the alkali metals increases moving down the group. Which statement explains this observation?
Decreasing distance between the nucleus and outer shell makes it easier for the metals to lose their valence electrons
Increasing distance between the nucleus and outer shell makes it harder for the metals to lose their valence electrons
Increasing distance between the nucleus and outer shell makes it easier for the metals to lose their valence electrons
Decreasing distance between the nucleus and outer shell makes it easier for the metals to lose their valence electrons
Which row describes the properties of fluorine?
A
B
C
D
Astatine is a radioactive Group VII element which is extremely unstable, making it difficult to study. The physical and chemical properties of astatine can only be estimated.
Which row most likely describes the properties of astatine?
A
B
C
D
The Group I metals show trends in both their physical and chemical properties.
(a) (i) How do their melting points vary down the group?
(ii) Which element in the Group has the highest density?
(iii) All Group I metals react with cold water. Write the balanced chemical equation between Rb and water.
Rubidium, Rb, is a Group I element. It has similar physical and chemical properties to other elements in Group I.
(a) Predict how many electrons are there in th outer shell of rubidium atom
(b) When Rb is added to cold water a reaction occurs.
(i) Suggest two observations that would ne made when Rb is added to cold water?
(ii) What would be the color of the solution if methyl orange was added to it after the reaction?
(iii) Write a chemical equation for the reaction between Rb and water
(iv) Suggest one safety measure that should be used when rubidium is added to cold water
Put the Group I elements, Cs, Li, K, Rb and Na in their order of reactivity with water.
________, ________, ________, ________, ________
(a)
The halogens are a group of non-metals in Group VII of the periodic table.
The reactivity of the halogens decreases down the group.
Describe an experiment which shows that chlorine is more reactive that iodine, include an equation in your answer.
Li is an element in group I of the periodic table
Li is a non- metal
Li forms a sulfate with the formula LiSO4
Li reacts with water to form an alkali
Li reacts with water to form a white precipitate
Lithium and Potassium are alkali metals.
Li and K have similar chemical properties because (a)
A small piece of K is added to water. The list below shows some statements. Three of which describes what happens when potassium reacts with water. Tick in the boxes next to each correct statement.
potassium oxide solution is formed
potassium melts and floats
a lilac flame is seen
potassium moves around
bubbles of oxygen gas are produced and fizzing occurs
The table gives information about some of the elements in Group VII of the periodic table.
What is the color of chlorine at room temperature?
black
blue
green
orange
