Ionisation

The video explains how ions are formed by adding or removing electrons from atoms or molecules. When an electron breaks free, a positively charged ion is created. Conversely, when an electron is captured by an atom, a negatively charged ion is formed.

What happens when electrons are added to atoms or molecules?

• They become neutral.

• They form charged particles.

• They disintegrate.

• They become radioactive.

What is the result when an electron escapes from an atom?

• A neutral atom is formed.

• The atom becomes stable.

• A negatively charged ion is created.

• A positively charged ion is created.

What is the charge of an ion when an electron is lost?

• Negative

• Neutral

• Positive

• No charge

Which of the following occurs when an atom captures an electron?

• A negatively charged ion is formed.

• A positively charged ion is formed.

• The atom becomes unstable.

• The atom loses its charge.

How does an atom become a negative ion?

• By gaining a neutron

• By losing an electron

• By gaining an electron

• By losing a proton