Ch. 11 Chemistry Part 1

In every balanced chemical equation, each side of the equation has the same number of ____.

atoms of each element.

Chemical equations ______

describe chemical reactions.

In the chemical equation H₂0 (aq)→H₂0(l)+O₂(g), the O₂ is a ____.

product

A skeleton equation does NOT show which of the following?

the relative amounts of reactants and products

When the equation KClO₃(s)→KCl(s)+O₂(g) is balanced, the coefficient of KClO₃ is ____.

2

What are the missing coefficients for the skeleton equation below? Cr(s)+Fe(NO₃)₂(aq)→Fe(s)+Cr(NO₃)₃(aq)

2,3,3,2

When the equation Fe+Cl₂→FeCl₃ is balanced, what is the coefficients for Cl₂?

3

When the following equation is balanced, what is the coefficient for HCl? Mg(s)+HCl(aq)→MgCl₂(aq)+H₂(g)

3

If you rewrite the following word equation as a balanced chemical equation, what will the coefficient and symbol for fluorine be? nitrogen trifluoride → nitrogen + fluorine

3F₂

Which of the following is the correct skeleton equation for the reaction that takes place when solid phosphorus combines with oxygen gas to form diphosphorus pentoxide?

P(s)+O₂(g)→P₂O₅(g)

Chemical equations must be balanced to satisfy ____.

The law of conservation of mass.

Which of the following statements is NOT true about what happens in all chemical reactions?

The starting substances are called reactants.

Symbols used in equations, together with the explanations of the symbols , are shown below. Which set is correct?

(aq), dissolved in water

What are the coefficients that will balance the skeleton equation below? AlCl₃+NaOH→Al(OH)₃+NaCl

1,3,1,3

What are the coefficients thatt will balance the skeleton equation below? N₂+H₂→NH₃

1,3,2