Chemical reactions grade 7
Authored by Noura Abu Shady
Chemistry
7th Grade
NGSS covered
Used 585+ times
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About
This quiz covers chemical reactions and chemical equations at the 7th grade level, focusing on fundamental chemistry concepts that introduce students to the molecular world. The questions assess students' understanding of chemical equation terminology, including the identification of reactants and products, the law of conservation of mass, and basic balancing techniques. Students need to recognize that reactants appear on the left side of chemical equations while products appear on the right, understand that matter cannot be created or destroyed during chemical reactions, and apply this principle to predict masses and balance simple equations. The quiz also tests students' ability to count atoms in chemical formulas using coefficients and subscripts, distinguish between elements and compounds, and recognize that molecules are composed of multiple atoms. To succeed, students must master the symbolic language of chemistry, including proper interpretation of chemical notation, and develop reasoning skills that connect abstract chemical principles to concrete mathematical applications. Created by Noura Abu Shady, a Chemistry teacher in Egypt who teaches grade 7. This quiz serves as an excellent formative assessment tool to gauge student comprehension of introductory chemical reaction concepts before advancing to more complex stoichiometry and reaction mechanisms. Teachers can effectively use this quiz as a warm-up activity to activate prior knowledge, as guided practice during instruction to reinforce key vocabulary and concepts, or as homework to consolidate learning after classroom demonstrations of chemical reactions. The varied question formats, from multiple choice identification to mathematical applications, make it particularly valuable for review sessions before unit tests or as a diagnostic tool to identify students who need additional support with chemical equation interpretation. This assessment aligns with NGSS MS-PS1-5, which requires students to develop and use a model to describe how the total number of atoms does not change in a chemical reaction, and supports Common Core mathematical practices through its emphasis on quantitative reasoning and problem-solving with chemical formulas.
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21 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The substances listed on the right side of a chemical equation are the
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The substances listed on the left side of a chemical equation are the
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Identify the reactant(s) and product(s) of the reaction.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A molecule is smaller than an atom.
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Identify the Reactants in this equation.
A
B
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Fill in the blank:
The law of conservation of mass states that matter cannot be created nor __________________.
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In a closed system, a chemical reaction takes place. The mass of the reactants in the beginning of the reaction is 25g. What does the mass have to be in the end of the reaction in order to follow the law of conservation of mass?
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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