Which is the chemical formula for iron(III) sulfate?

• Fe₂SO₄

• Fe₃SO₄

• Fe(SO₄)₃

• Fe₂(SO₄)₃

• Fe₂S₃

The name of the compound MgBr₂ is ________.

• manganese bromite

• manganese bromide

• magnesium bromite

• magnesium bromide

• magnesium dibromide

The anion S^2- is called ______.

• sulfide

• sulfite

• sulphorus

• sulfuron

• sulfate

The compound PF₅ is called ______.

• monophorofluoride

• phosphorus pentafluoride

• pentaphosphoro fluoride

• phosphorus tetrafluoride

• potassium pentafluoride

An element that has a high first ionization energy and is chemically inactive would most likely be found among which group of elements?

• Alkali metals (Group 1)

• Alkaline earth metals (Group 2)

• Halogen (Group 17)

• Noble gases (Group 18)

• Transition metals (Group 3 to 12)

Which statement does NOT explain why elements in a group are placed together?

• They tend to have a similar oxidation number.

• They tend to have the same chemical reactivity.

• They tend to have the same electronegativity values.

• They tend to have the same charge when they form ions.

• They tend to have the same number of valence electrons.

Which one is not a property

• Mass

• Density

• Melting Point

• Solubility

Balance this equation

• 6P + O₂ -------> 3P₂O₅

• P₄ + O₂ ------> 2P₂O₅

• 2P + 2O₂ ------> P₂O₅

• 4P + 5O₂ ------> 2P₂O₅

Cohesion

• attraction between molecules of different substances

• attraction between molecules of the same substance

• a material composed of two or more elements

• ions gradually become dispersed in water

Adhesion

• attraction between molecules of different substances

• attraction between molecules of the same substance

• a material composed of two or more elements

• ions gradually become dispersed in water