CHEMISTRY ASSESSMENT

Carbon is atomic number______________ (1 Mark)

Which of the following is the correct chemical symbol of copper (1 Mark)

• Co

• Cu

• C

• Cp

How many groups are there in the periodic table (1 Mark)

• 7

• 6

• 8

• 4

Which one of the following is the correct chemical formula of Calcium nitrate (4 Marks)

• Ca₃N₂

• CaN

• Ca(NO₂)₂

• Ca(NO₃)₂

Metal + Acid ------> (2 Marks)

• Base + Hydrogen

• Salt + Hydrogen

• Base + Water

• Salt + Water

When magnesium hydroxide reacts with dilute sulphuric acid, it forms ____________ (Choose two) (4 Marks)

• Magnesium Chloride

• Water

• Magnesium Sulphate

• Hydrogen

Which of the equations below is well-balanced? (Choose one) (4 Marks)

• Mg_(s) + 2HCl_(aq)----> MgCl_2(aq) + H_2(g)

• 2Mg_(s)+2HCl_(aq)---->2MgCl_2(aq)+H_2(g)

• Mg_(s) + HCl_(aq)----> MgCl_2(aq) + H_2(g)

• Mg_(s) + HCl_(aq)----> MgCl_2(aq) + 4H_2(g)

Which one of the following statements is true (2 Marks)

• Magnesium hydroxide and copper (II) oxide are bases

• Calcium oxide is a metal

The table above shows a periodic table. What is the name given to metals occupying region labelled M? (2 Marks)

Which one of the following represents the correct electron arrangement of Magnesium? (2 Marks)

• 2.2.8

• 2.8.8.2

• 2.8.2

• None of the above