Chemistry Practice

Look at the diagram. It shows part of the periodic table. Write down the chemical symbol that has an electronic structure with a full outer orbit.

• Na

• Mg

• Cl

• Ne

Look at the diagram. It shows part of the periodic table. Write down the chemical symbol for the most reactive group 7 element shown in the periodic table

• Na

• F

• Cl

• Ne

Look at the diagram. It shows part of the periodic table. Write down the chemical symbol for the element which is in group 2 and period 3.

• K

• Ca

• Mg

• Al

Which scientist suggested the idea that atom have nucleus?

• Dalton

• Darwin

• Galilleo

• Rutherford

Priya investigates the reaction between zinc and hydrochloric acid as the diagram shown. Write down the variable Priya changes in her investigation.

Priya investigates the reaction between zinc and hydrochloric acid as the diagram shown. Write a conclusion for her investigation. Explain your answer.

Complete the diagram to show what happens when a light ray hits a plane mirror.

Complete the diagram to show what happens when a light ray passes through a glass block.

When white light passes through a prism, it splits into the colours of rainbow. What is the name of this process?

• Reflection

• Refraction

• Dispersion

• Reaction

Rajiv draws the magnetic field pattern for a weak magnet bar. Write down the name of the part labelled N. (without capital letter)