Students learn to balance chemical equations — adjusting coefficients so every atom is accounted for on both sides — putting the law of conservation of mass into practice, one reaction at a time.
Students will be able to…
In a chemical reaction, atoms are never created or destroyed — only rearranged. So how do we write equations that honor this rule exactly?
Project each item and have students choose the correctly balanced equation. The tool shows the atom count on each side.
Tap any phase to open the teacher moves and student actions.
If atoms can’t vanish, what must be true of every equation?
Students investigate.
Teacher explains.
Apply.
Three quick checks.
Aligned to the Next Generation Science Standards (High School Chemistry) and Common Core literacy in science.
Use mathematical representations to support the claim that atoms are conserved in a reaction.
Construct an explanation for reaction outcomes based on patterns.
Develop a model to illustrate energy change in a reaction.
Follow precisely a complex multistep procedure.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students use the coefficients of a balanced equation as mole ratios to predict how much product forms. A printable balancing sheet is in the Science library.
Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.
A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.