Q2 for Gr8 LLA students

Which of the following substances is composed of atoms?

• Helium

• Ammonium Chloride

• H2O

• Sulfur Hexafluoride

What is the difference between an atom and a molecule?

• Atoms contain different number of protons and electrons, while molecules contain different number of protons and electrons

• Atoms contain equal number of protons and electrons, while molecules contain equal number of protons and electrons

• Atoms contain different number of protons and electrons, while molecules contain equal number of protons and electrons

• Atoms contain equal number of protons and electrons, while molecules contain different number of protons and electrons

Which compound is considered to be a molecular compound?

• Carbon Monoxide

• Calcium Oxide

• Sodium Chloride

• Magnesium Chloride

What is the charge of the aluminum ion?

• 4+

• 2+

• 3+

• 1+

How many neutrons are present in a phosphorus 31 ion?

• 13

• 14

• 15

• 16

Which type of compound is composed of metals and nonmetals?

• Covalent Compounds

• Molecular Compounds

• Elemental Compounds

• Ionic Compounds

What is the net charge of the ammonium ion?

• 3-

• 4-

• 0

• 2-

• 1-

How many electrons are present in a neon atom?

• 8

• 9

• 11

• 10

Which compound is composed of two nonmetals?

• Carbon Monoxide

• Calcium Oxide

• Sodium Chloride

• Ammonium Chloride

What is the difference between an atom and an ion?

• Atoms contain equal number of protons and electrons, while ions contain different number of protons and electrons

• Atoms contain different number of protons and electrons, while ions contain different number of protons and electrons

• Atoms contain equal number of protons and electrons, while ions contain different number of protons and electrons

• Atoms contain different number of protons and electrons, while ions contain equal number of protons and electrons