Balancing Chemical Equations Made Easy

Why is it necessary to balance chemical equations?

• To make the equation look simpler

• To obey the law of conservation of mass

• To use fewer chemicals in reactions

• To speed up the reaction

Tags

NGSS.MS-PS1-5

What do coefficients in a chemical equation represent?

• The pressure of the reaction environment

• The number of molecules involved

• The charge of ions

• The temperature at which reaction occurs

Tags

NGSS.MS-PS1-5

In the analogy of building a bicycle, what was added to balance the equation?

• Additional pedals

• More handlebars

• A second bicycle frame

• An extra wheel

What is the first type of element you should balance in a chemical equation?

• Metals

• Nonmetals

• Hydrogen

• Oxygen

Which element is usually balanced last in chemical equations?

• Nitrogen

• Oxygen

• Hydrogen

• Carbon

What should you never change when balancing chemical equations?

• Reaction conditions

• Coefficients

• Subscripts

• Types of reactants

How many potassium atoms are needed on the left side to balance the potassium on the right in the example?

• Six

• Four

• Two

• Three

Tags

NGSS.MS-PS1-5

What is the correct coefficient for sulfur to balance the equation in the example?

• Four

• One

• Two

• Three

Tags

NGSS.HS-PS1-7

What tool is recommended for balancing chemical equations due to possible changes?

• Permanent marker

• Pencil

• Computer software

• Calculator

What happens to the number of oxygens when the coefficient for sulfur is adjusted to three?

• It multiplies by three

• It doubles

• It remains the same

• It decreases

Tags

NGSS.MS-PS1-5