Year 9 Science: Reactivity and Chemical Reactions

Front

What is the reactivity series?

Back

The reactivity series ranks metals according to their reactivity, with the most reactive metals at the top and the least reactive at the bottom.

Front

List the first five metals in the reactivity series.

Back

Potassium (K), Sodium (Na), Calcium (Ca), Magnesium (Mg), Zinc (Zn).

Front

What happens to reactivity as you move down the reactivity series?

Back

Reactivity decreases as you move down the series.

Front

What is a displacement reaction?

Back

A displacement reaction occurs when a more reactive metal replaces a less reactive metal in a compound.

Front

Give an example of a displacement reaction.

Back

When an iron nail is placed in a copper sulfate solution, iron displaces copper, producing iron sulfate and copper.

Front

What is the word equation for the reaction between copper sulfate and iron?

Back

Copper sulfate + Iron → Iron sulfate + Copper.

Front

What is the thermite reaction?

Back

The thermite reaction is an exothermic reaction where aluminum displaces iron from iron oxide, producing aluminum oxide and molten iron.

Front

What is a salt?

Back

Salts are chemical compounds formed through reactions involving acids.

Front

Name a common salt and its use.

Back

Sodium chloride (table salt) is used for food preservation and flavor enhancement.

Front

What is the general equation for making salts using a metal and an acid?

Back

Acid + Metal → Salt + Hydrogen.