Chemical Changes MCQ Test 1 Answers

. 1 pt(s).	From the list below select which is a compound. You may need to use your periodic table to help you decide.
	A.	Aluminium
	B.	Carbon Dioxide
	C.	Copper
	D.	Hydrogen


. 1 pt(s).	What forms when two, or more, elements join together?
	A.	mixture
	B.	element
	C.	compound
	D.	liquid


. 1 pt(s).	Using the periodic table you have in your homework diary find the symbol for the element gold. (if you don’t have your diary find a periodic table on the internet)
	A.	Ag
	B.	Au
	C.	Hg
	D.	au


. 1 pt(s).	Most elements in the periodic table are
	A.	metals
	B.	non-metals
	C.	compounds
	D.	man-made


. 1 pt(s).	What element is represented by the symbol Ag. Use the periodic table you have in your homework diary. (if you don’t have your diary find a periodic table on the internet)
	A.	Silver
	B.	Gold
	C.	Mercury
	D.	Arsenic


. 1 pt(s).	Approximately how many compounds are there?
	A.	Only a few
	B.	thousands
	C.	around a hundred
	D.	millions

	You can choose one, or more than answer for this question.
. 1 pt(s).	Decide which of the following are physical changes?
	A.	Water Boiling
	B.	Striking a match
	C.	Iron rusting
	D.	Adding alka seltzer to water
	E.	petrol combusting in a car angine
	F.	A puddle disappearing in the sun
	G.	Ice melts


. 1 pt(s).	Decide which of the following are chemical changes
	A.	Frying an egg
	B.	Water boiling
	C.	Iron rusting
	D.	Striking a match
	E.	Ice melting
	F.	A puddle disappearing in the sun


. 1 pt(s).	Select the elements from the list below
	A.	Copper sulphate
	B.	Iron
	C.	Sugar
	D.	Water
	E.	Hydrogen
	F.	Carbon dixoide
	G.	Flour
	H.	Gold
	I.	Brass
	J.	Silver


. 1 pt(s).	Select the compounds from the list below.
	A.	Copper sulphate
	B.	Iron
	C.	Silver
	D.	Flour
	E.	Water
	F.	Carbon dixoide
	G.	Gold
	H.	Brass
	I.	Sugar
	J.	Iron

.
1 pt(s).

Which of the diagrams below show a compund?

A.

B.

C.

D.

.
1 pt(s).

Which of the diagrams below show an element?

A.

B.

C.

D.

.
1 pt(s).

Which of the following shows a mixture?

A.

B.

C.

D.


. 1 pt(s).	In her chemistry class, Jemima added a spatula of a white compound into a colourless solution. This caused the solution to fizz and the white powder disappeared. She was left with a colourless solution. How could Jemima tell that a chemical reaction had occurred?
	A.	A colour change had occurred
	B.	A gas was given off
	C.	The test tuibe had heated up
	D.	A solid was formed


. 1 pt(s).	When a chemical reaction takes place….
	A.	Solutions always turn cloudy
	B.	A gas is always given off
	C.	A colour change is always seen
	D.	A new substance is always produced

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