is a soluble base and has a pH of greater than 7.

a substance has the properties of an alkali, or contains an alkali. It is often used to refer to solutions of soluble bases with pH greater than 7.

is a column on the periodic table that corresponds to the number of electrons in the outer shell of an atom.

is a horizontal row on the periodic table. Each period corresponds to a number of shells of electrons in an atom of an element.

Group 1 and 2 metals

Science

In the Atomic structure and the periodic table unit, pupils will build on this knowledge to learn about how the structure of atoms in each element determine its position on the periodic table and affects its chemical and physical properties.

In the Atoms, elements and compounds unit, pupils learnt about atoms, the differences between elements and compounds and how particles reorganise in a chemical reaction

Patterns in the periodic table

They have lower densities than other metals.

They become more reactive down the group.

They form acidic solutions when reacting with water.

Which of the following statements about Group 1 metals are correct?

Group 1 metals are also known as the {{}} metals.

Group 1 metals react with water to form an {{}} solution and hydrogen gas. They do not produce oxygen or acidic solutions.

Starting with the least reactive, sort the following Group 1 metals into order of increasing reactivity with water.

True or false? Sodium, calcium and potassium react with water or an acid to produce a solution with a pH greater than 7.

Group 2 metals react with dilute acids to form a salt and {{}} gas.

A row of elements with the same number of electron shells.

A column of elements with the same number of electrons in their outer shell.

A row of elements arranged by increasing atomic number.

A column of elements with the same number of protons.

Elements are arranged based on atomic mass.

Substances interact to form new products.

Which of the following statements correctly describes a chemical reaction?

It reacts with bases to form water and a salt.

Which of the following statements correctly describes an acid?

Which element is in Group 1 and Period 2 of the periodic table?

An acid reacts with a base to form a salt and water.

A substance reacts with oxygen, releasing energy.

An element replaces another in a compound.

A single compound breaks down into two or more simpler substances.

Match the following types of reactions to their descriptions.

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