Elements, mixtures and compounds

Elements, mixtures and compounds

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What are elements?

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(a) Look at the periodic table.

What are the symbols for the following elements:

helium, silicon, oxygen, silver?

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(b) What are the names of the elements having the

following symbols: Ne, Br, Sn, Zn?

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What are compounds?

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1.The following substances are compounds. What elements do you think they are made of?

(a)calcium oxide,

(b)carbon monoxide,

(c)hydrogen sulfide

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2.Which of the following are elements and which are compounds?

copper, magnesium oxide, sulfur, water, hydrogen, sugar

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What are the three properties of mixtures?

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How is a solution formed?

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Coffee dissolves in water. Which is the solute?

Which is the solvent?

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What is the difference between a solution and a suspension?