Mid-Term Review

Classify Methane (CH4)

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

What is it called when a liquid turns into a solid?

• Freezing

• Melting

• Condensation

• Evaporation

What is it called when a gas turns into a solid?

• deposition

• sublimation

• freezing

• melting

The element Neon (Ne) has an atomic number of 10. How many protons and neutrons does it have?

• 10 protons and 10 neutrons

• 10 protons and 20 neutrons

• 10 protons and 0 neutrons

Sulfur has an oxidation number of -2, so which atom will it most likely form a bond with?

• Mg (+2)

• Na (+1)

• Rb (+1)

• B (+3)

What is the name of the compound H2O?

• Dihydrogen monoxide

• Hydrogen dioxide

• Dihydrogen dioxide

• Hydrogen oxide

What is the definition of an ion?

• An atom that is neutral

• An atom that has different numbers of neutrons

• An atom that has a positive or negative charge

What's the definition of an isotope?

• Two atoms with the same protons and different neutrons

• Two atoms with different protons and same neutrons

• Two atoms with same protons and same neutrons

• Two atoms with different protons and different neutrons

Potassium will transfer one electron to a Chlorine atom. What type of bind do they form?

• Ionic

• Metallic

• Covalent

Potassium will transfer one electron to Chlorine. Which element is the CATION?

• Potassium

• Chlorine