SEM 1 - GR 8 CHEMISTRY PAPER 1 REVIEW

Untitled Question

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Which of the following elements is in Group 1 of the periodic table?

• a. Helium
• b. Lithium
• c. Carbon
• d. Nitrogen

What is the atomic number of Oxygen?

• a. 6
• b. 7
• c. 8
• d. 9

Which element has the electronic configuration 2,8,1?

• a. Magnesium
• b. Sodium
• c. Potassium
• d. Calcium

What is the mass number of Carbon if it has 6 protons and 6 neutrons?

• a. 6
• b. 12
• c. 14
• d. 16

Which element is found in Group 7 of the periodic table?

• a. Hydrogen
• b. Chlorine
• c. Potassium
• d. Calcium

Which element has the atomic number 10?

• a. Neon
• b. Nitrogen
• c. Magnesium
• d. Sodium
• Option 5

Which of the following elements is a noble gas?

• a. Hydrogen
• b. Helium
• c. Lithium
• d. Beryllium
• Option 5