Compounds and Mixtures

When two or more different atoms bond together they form a...

• mixture

• element

• compound

• molecule

Which of the following options is NOT true of sulfur?

• it does not conduct heat or electricity

• it is yellow

• it is magnetic

• it is a non-metal

in science, the word 'pure' describes...

• water that does not have metal in it

• something that is only one substance

• a diamond that has not been cut

• salt before it reacts with chlorine

mixtures can be...

• liquids

• gases

• solids

• all of the above

Mixtures that are metal are called...

• compounds

• alloys

• metal mixtures

• elements

steel is different to other alloys, because...

• it is heavier than other alloys

• it has an element in it that is not metal

• it is not shiny

• it has a low boiling point

which of the following is NOT a mixture

• sugar water

• mashed potatoes with cheese

• salt

• onion and tomato soup

When a metal and not metal form a mixture, what is the easiest way to separate them?

• boiling the mixture

• using a spoon to scoop out the metal

• using a magnet

• none of the above

When drop a lump of sugar into a glass of water it...

• floats on top of the water

• sinks to the bottom of the glass

• dissolves in the water

• forms a compound

when a solid dissolves in water it is said to be...

• salt

• concentrated

• weak

• soluble