
Chemical reactions and equations
Authored by Lekha Naveen
Chemistry
10th Grade
NGSS covered
Used 2+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a chemical reaction?
Tags
NGSS.MS-PS1-2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When two substances were combined, bubbles were produced and the temperature dropped. This most likely means that:
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Before a chemical reaction, the total mass of two reactants is measured to be 40 grams. After the reaction, what should be the total mass of the products?
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Copper chloride and aluminum react to produce aluminum chloride and copper. Which of the following is the correctly balanced chemical equation for this reaction?
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which observation would most likely indicate that an exothermic reaction has occurred?
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The first part of a balanced chemical equation is shown: H2SO4 + 2NaOH → ________. In order for this equation to be balanced, how many hydrogen (H) atoms must be present in the products?
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose two substances were combined together in a beaker. You know that a chemical reaction occurred if:
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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