FREE CHEMISTRY AND STUDY GAMES ABOUT BALANCE

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FREE CHEMISTRY AND STUDY GAMES ABOUT BALANCE

CHEM RXNS EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -10 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: [...] are the numbers to the LEFT of the entire molecule, compound, or atom.

Answer:

Coefficients are the numbers to the LEFT of the entire molecule, compound, or atom.

Question 2: A balanced equation reflects the law of conservation of [...].

Answer:

A balanced equation reflects the law of conservation of mass.

Question 3: The best way to become good at balancing equations is to [...].

Answer:

The best way to become good at balancing equations is to practice balancing them.

Question 4: Coefficients do not tell you [...].

Answer:

Coefficients do not tell you what the molecules, compounds, or atoms are.

Question 5: [...] tell you how many of the molecule, compound, or atom there are.

Answer:

Coefficients tell you how many of the molecule, compound, or atom there are.Question 6: You can balance a chemical equation by changing the [...] and only the [...]!

Answer:

You can balance a chemical equation by changing the coefficients and only the coefficients!Question 7: Balanced Equations: for each type of atom, the number of atoms on the reactant side of the equation must equal the number of atoms on the [...] side.

Answer:

for each type of atom, the number of atoms on the reactant side of the equation must equal the number of atoms on the product side.Question 8: You can NOT change [...which numbers?...] when balancing an equation.

Answer:

You can NOT change the numbers in subscript (to the bottom right) when balancing an equation.Question 9: Changing the numbers in subscript changes the [...] of the molecule or compound.Changing them does not [...] the reaction, it creates a new one.

Answer:

Changing the numbers in subscript changes the identity of the molecule or compound. Changing them does not balance the reaction, it creates a new one.Question 10: Any chemical equation you write to explain a chemical reaction must show that the mass of the products is equal to the mass of the [...].

Answer:

Any chemical equation you write to explain a chemical reaction must show that the mass of the products is equal to the mass of the reactants.