Question 1

Which of the following represents Manganese?

Accepted Answer

Mn

Answer

Mo

Answer

Ma

Answer

Mg

Question 2

The reactivity of the alkali metals decreases in the order:

Accepted Answer

Cs, Rb, K, Na

Answer

Cs, K, Na, Rb

Answer

Rb, Na, K, Cs

Answer

Na, K, Rb, Cs

Question 3

What is the correct electron configuration of the sulfur atom?

Accepted Answer

1s²2s²2p⁶3s²3p⁴

Answer

1s²2s²2p⁶3s²3d⁴

Answer

1s²2s²2p⁶3s²3p⁶

Answer

1s²2s²2p⁴

Question 4

Which orbital has the highest energy?

Accepted Answer

4s

Answer

1s

Answer

2p

Answer

3d

Question 5

What is the maximum number of bonds aluminium can make?

Accepted Answer

3

Answer

2

Answer

4

Answer

1

Question 6

Identify the bond formed when two atoms share four electrons.

Accepted Answer

double covalent bond

Answer

ionic bond

Answer

triple covalent bond

Answer

single covalent bond

Question 7

What is a key feature of Atomic Absorption Spectroscopy (AAS)?

Accepted Answer

It only measures one specific wavelength.

Answer

Atoms are not energised.

Answer

It measures all wavelengths.

Answer

It relies on emission of light.

Question 8

What happens when an electron absorbs electromagnetic radiation?

Accepted Answer

The electron jumps to a higher energy level

Answer

The electron moves to a lower energy level

Answer

The electron is ejected from the atom

Answer

The atom splits into two

Question 9

Which statement correctly describes a difference between absorption and emission spectra?

Accepted Answer

Emission spectra measure wavelengths of light produced by electrons returning to lower energy levels, while absorption spectra measure wavelengths absorbed as electrons move to higher energy levels.

Answer

Emission spectra require no energy input, while absorption spectra require energy input.

Answer

Both spectra measure the same wavelengths of light.

Answer

Absorption spectra only occur in liquids, while emission spectra only occur in gases.

Question 10

Which technique is best suited to determine the concentration of elements in a sample?

Accepted Answer

Atomic Absorption Spectroscopy (AAS)

Answer

Mass Spectrometry

Answer

Chromatography

Answer

Atomic Emission Spectroscopy (AES)

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