Chemistry Quiz

The electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁴ represent what element or ion ?

• Potassium

• Sulphur

• Chlorine

• Carbon

What is the name of the element with the symbol 'Au'?

• A. Silver

• Gold

• Aluminum

• D. Uranium

Rocks that are "born from fire" because they are formed from lava or magma are known as __________.

• Igneous Rock

• B. Sedimentary Rock

• C.Metamorphic Rock

• D. Mineral Rock

What do elements in the same period of the periodic table have in common?

• The same atomic number

• Similar chemical properties

• The same number of shells

• Similar physical properties

What holds the nucleus of an atom together despite the repulsion between protons?

• A. Gravitational force

• Electromagnetic force

• Strong nuclear force

• Weak nuclear force

What happens to the pressure of a gas if the volume of its container decreases while the temperature remains constant?

• A. The pressure decreases.

• B. The pressure remains the same.

• C. The pressure increases.

• D. The pressure disappears.

Which of these elements is in the same group as fluorine?

• A. Potassium

• Bromine

• Proactine

• Hydrogen

Which of these statements is true about igneous rocks?

• They are formed from the compaction of sediments.

• They are formed from cooling and solidification of magma or lava.

• They contain fossils.

• They are the result of heat and pressure on existing rocks.

What is the number of neutrons in Magnesium atom (²⁴Mg₁₂) ?

• 12

• 24

• 23

• 8