Materials and cycles on Earth

Which of the following is not a sub-atomic particle?

• Protons

• Nucleus

• Electrons

• Neutrons

Which of the following has no charge?

• Electrons

• Protons

• Neutrons

• Both electrons and neutrons

The attraction between protons and electrons in atom is known as?

• Electromagnetic attraction

• Electrostatic attraction

• Electric attraction

• Electronic attraction

Who came up with the plum pudding model of atom?

• Ernest Rutherford

• James Chadwick

• J.J. Thompson

• Both J.J. Thompson and Earnest Rutherford

Gold foil experiment was conducted by?

• J.J. Thompson

• Ernest Rutherford

• James Chadwick

• J.J. Thompson and James Chadwick

The results of the Gold foil experiment lead to the idea that,

• Gold atoms have no electrons

• Gold atoms must be mostly empty space

• Gold atoms are a collection of protons and neutrons

• Gold atoms have no space in between them

Which one of the following is a pure substance?

• Oxygen

• Copper oxide

• Silver nitrate

• Soil

Which one of the following is not an element?

• Oxygen

• Gold

• Sodium chloride

• Potassium

Which of the following is a compound?

• Soil

• Silver nitrate

• Sea water

• Black ink

100% pure gold is made up of?

• 18 carat

• 24 carat

• 22 carat

• 20 carat