Oh hello to 1A2!
I am going to post the science questions for the elements,compounds and
mixtures.
Let's begin!
1.Substance A is a yellow solid. It is a non-metal and can be found in
the Periodic Table.
(a)Which type of substance is Substance A? Element, compound or mixture?
Explain.
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(b)What is an element?
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(c)Predict what substance A is. State whether Substance A is located
in the Periodic
Table by stating the Group and Period to which Substance A belongs.
Write down
the chemical symbol of Substance A.

Substance A is________________.
Substance A is located in Group__________and Period____________of
the Periodic Table.
Chemical symbol for Substance A:_____________.

2.Copper oxide is a black solid. It is a compound formed by heating
copper metal with oxygen gas.
(a)What is a compound?
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(b)Copper oxide is a compound. A student wrote these statements
about copper oxide. Decide if the student is correct.
Explain why you think the student is right or wrong. Write
the correct statement if the statement is wrong.

i)Elements that are used to form copper oxide are NOT is any
fixed proportions by mass. True/false.
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ii)Copper oxide can be separated by chemical methods.
True/false.
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iii)No chemical reaction occurs when copper oxide is formed.
True/false.
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iv)Copper oxide has properties of copper and oxygen as it is made up of
copper and oxygen combined together. True/false.
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v)Other examples of compounds like copper oxide are air, sodium chloride,
sugar and orange juice. True/false.
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3(a)Do you think the soft drink “coke” is an element, compound or mixture? Explain.
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(b)What is a mixture?
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(c)Write down four properties of a mixture.
Property 1:
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Property 2:
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Property 3
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Property 4:
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Prepared by Kush/1A2/Greendale Secondary School
Great support,
Kush