Learning outcomes
Students will be able to:
- Explain how a balanced chemical equation shows the law of conservation of mass.
- Tell coefficients from subscripts, and explain why only coefficients may change.
- Count the atoms of each element on both sides of an equation, including atoms inside parentheses.
- Balance synthesis, decomposition, replacement, and combustion equations in the lowest whole-number ratio.
Standards alignment
- HS-PS1-7 NGSS: Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
- HS-PS1-2 NGSS (supports): Explain the outcome of simple chemical reactions using patterns of chemical properties.
Includes
30 leveled equations with hints and stars, a timed rapid round, a mode for checking any equation, and a printable lab worksheet. A teacher answer key is available from Logical Home Schooling.
No sign-in and no ads. Nothing students type is sent anywhere; progress is saved only in their own browser.