8Gd/8Ge Metals and Acids & Pure Metals and Alloys

What is a mixture?

• The corrosion of iron or steel (water and oxygen must be present for rusting to occur).

• Any element that is shiny when polished, conducts heat and electricity well, is malleable and flexible and often has a high melting point.

• Two or more substances jumbled together but not joined to each other.

• Results that are similar when repeated by the same experimenter.

What is effervescence?

• A description of how quickly or vigorously something reacts.

• The temperature at which a liquid boils.

• The production of a gas in a reaction in a liquid.

• The temperature at which a solid turns into a liquid.

What is the melting point?

• The temperature at which a liquid boils.

• How a substance reacts with other substances.

• The production of a gas in a reaction in a liquid.

• The temperature at which a solid turns into a liquid.

What is an acid?

• A substance that speeds up a reaction, without itself being used up.

• A substance that reacts with alkalis, turns litmus red, and has a pH of less than seven is acidic.

• A substance that reacts with many other substances or reacts very easily is reactive.

• A metal with one or more other elements added to improve its properties.

A metal with one or more other elements added to improve its properties.

• Alloy

• Malleable

• Corrosion

• Rusting

What is the definition of boiling point?

• Able to be beaten and bent into shape.

• How a substance reacts with other substances.

• The temperature at which a liquid boils.

• The production of a gas in a reaction in a liquid.

What is the definition of pure?

• A weak, brown, crumbly solid formed when iron
  corrodes. (A mixture of oxides and hydroxides of iron including iron hydroxide.)

• A single substance that does not have anything else in it.

What is the definition of malleable?

• Results that are repeatable and reproducible.

• Able to be beaten and bent into shape.

• A measurement that is close to the true value.

• The temperature at which a liquid boils.

When there is liquid turning into a gas in all parts of a liquid, creating bubbles of gas in the liquid.

• Salt

• Melting point

• Acid

• Boiling

Compound (other than water or hydrogen) formed during the neutralisation of an acid with a base (or the reaction of a metal with an acid).

• Rusting

• Salt

• Boiling point

• Melting point