8Gc/8Gd Metals with Water/Quality Evidence

What does reactive mean?

• 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 description of how quickly or vigorously something reacts.

What does reproducible mean?

• Results that are similar when repeated by different experimenters.

• A list of metals that shows them in order of their
  reactivity, with the most reactive at the top.

• A material made up of two or more substances. It has significantly different properties from the substances from which it is made.

• A description of how a material behaves and responds to forces and energy. Hardness is a physical property.

What is a reactivity series?

• A list of metals that shows them in order of their
  reactivity, with the most reactive at the top.

• A description of how quickly or vigorously something reacts.

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

• A material made up of two or more substances. It has significantly different properties from the substances from which it is made.

What does repeatable mean?

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

• An equation in which the names of the reactant(s) are written on the left side, there is an arrow pointing from left to right and the names of the product(s) are written on the right side.

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

• Results that are similar when repeated by different experimenters.

What does anomalous mean?

• When something, such as stone or metal, reacts with chemicals in the air or water and gets worn away.

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

• 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

• Something that does not fit a pattern. When talking about water, this means that water does not behave in the same way as other liquids when it freezes.

A measurement that is close to the true value.

• Reliable

• Physical property

• Chemical property

• Accurate

What is the definition of reactivity?

• A description of how quickly or vigorously something reacts.

• A description of how a material behaves and responds to forces and energy. Hardness is a physical property.

• A measurement that is close to the true value.

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

What is the definition of reliable?

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

• Able to be beaten and bent into shape.

• Results that are repeatable and reproducible.

• Results that are similar when repeated by different experimenters.

The difference between the highest and lowest values in a set of data (usually ignoring any anomalous results.

• Accurate

• Chemical Formula

• Pure

• Range