Chemistry ideas click fastest with real practice. This set gives your Grade 9-12 class ninety questions on mass mass calculations, aligned to the same NGSS performance expectation.
Sample questions include "If 12 g of N₂ reacts with H₂ to form NH₃, how much NH₃ is produced? (N₂ + 3H₂ -> 2NH₃)?", "In the reaction 2C₄H₁₀ + 13O₂ -> 8CO₂ + 10H₂O, how much CO₂ is produced from 58 g of C₄H₁₀?", and "During the reaction 2Na + Cl₂ -> 2NaCl, how much NaCl is formed from 23 g of Na?"
All three worksheets cover the same topic in different question styles. That means you can use one as a pretest, another for practice or homework, and the third as a follow up quiz, without students ever seeing the same question twice.
This set is part of a complete NGSS aligned chemistry unit. The unit also covers Law of Conservation of Mass, Balancing Equations Challenge, Stoichiometry Introduction, Mole Concept Quiz, Mole Mole Problems, and Limiting Reactant, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.
Suitable for Grade 9-12 chemistry classes, and for NGSS aligned review at any point in the school year. This set is aligned to NGSS standard HS-PS1-7.
