Which information is not conveyed by a balanced chemical equation?

• Physical states of reactants and products

• Symbols and formulae of all the substances involved in a particular reaction

• Number of atoms/molecules of the reactants and products formed

• Whether a particular reaction is actually feasible or not

Chemically rust is

• hydrated ferrous oxide

• only ferric oxide

• hydrated ferric oxide

• none of these

What is the molecular formula for barium chloride?

• BaCl2

• BaCl

• Ba2Cl

• BaCl3

Reactions in which energy is absorbed are known as _________ reactions.

Oxidation is the loss of electrons from a substance.

• True

• False

The reaction between nitrogen and hydrogen to give ammonia is an example of a combination reaction.

• True

• False

Unbalanced reactions are also known as _________

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Element or compound?
H₂O

• Element
• Compound

Element or compound?
O₂

• Element
• Compound