Balancing Chemical Equations Challenge

What fundamental principle is emphasized when balancing chemical equations?

• Reduction of compounds

• Creation of new elements

• Conservation of matter

• Conservation of energy

Tags

NGSS.HS-PS1-7

In the reaction involving CS2 and O2, what is the state of carbon disulfide?

• Solid

• Gas

• Liquid

• Plasma

How many oxygen atoms are there on the reactant side before balancing the equation with CS2 and O2?

• Two

• Six

• Three

• Four

Tags

NGSS.MS-PS1-5

What is the correct coefficient for oxygen gas to balance the oxygen atoms in the reaction with CS2?

• 2

• 6

• 3

• 4

In the equation involving potassium chromate and lead nitrate, what ions are kept together for simplification?

• Lead and chromate

• Potassium and nitrate

• Chromate and nitrate

• Nitrate and potassium

What is the correct coefficient for potassium nitrate on the product side to balance the equation with potassium chromate and lead nitrate?

• 4

• 1

• 3

• 2

Tags

NGSS.HS-PS1-7

What is the initial problem with the oxygen balance in the reaction involving C3H6 and oxygen?

• Too few on the reactant side

• Too many on the reactant side

• Too few on the product side

• Balanced from the start

Tags

NGSS.HS-PS1-7

What unusual step is taken to balance the equation involving C3H6 and oxygen?

• Changing the reaction pathway

• Adding a catalyst

• Doubling all coefficients

• Using a fractional coefficient

Tags

NGSS.HS-PS1-7

What is the final coefficient for water (H2O) in the balanced equation of C3H6 and oxygen?

• 12

• 9

• 6

• 3

Tags

NGSS.HS-PS1-7

How many oxygen atoms are there on the product side after balancing the equation with C3H6 and oxygen?

• 24

• 18

• 12

• 9

Tags

NGSS.HS-PS1-7