Balancing Chemical Equations Practice

The video tutorial explains how to balance a chemical equation involving sodium hydride (NaH) and boron trifluoride (BF3). It begins by identifying the components of the equation and proceeds to balance the atoms on both sides. The tutorial emphasizes starting with larger numbers, such as hydrogen, to simplify the process. The instructor demonstrates balancing sodium and fluorine atoms, ensuring the equation is balanced. The video concludes with tips on balancing equations efficiently.

What are the initial counts of sodium, hydrogen, and boron atoms on the reactant side of the equation?

• One sodium, one hydrogen, one boron

• Four sodium, four hydrogen, four boron

• Two sodium, two hydrogen, two boron

• Three sodium, three hydrogen, three boron

How many hydrogen atoms are there on the product side before balancing?

• One

• Four

• Six

• Two

What coefficient is placed in front of sodium hydride to balance the hydrogen atoms?

• 8

• 6

• 4

• 2

After balancing hydrogen, what is the next element to be balanced?

• Sodium

• Oxygen

• Fluorine

• Boron

What coefficient is used in front of sodium fluoride to balance sodium atoms?

• 8

• 4

• 2

• 6

How many fluorine atoms are there on the reactant side after balancing?

• Eight

• Two

• Four

• Six

What coefficient is placed in front of boron trifluoride to balance boron atoms?

• 1

• 2

• 3

• 4

What is the strategy mentioned for balancing equations with larger numbers?

• Ignore larger numbers

• Balance all elements simultaneously

• Start with the smallest numbers

• Balance larger numbers first