M19 L1 Notes Quizizz - Chemical Changes

Quiz
•
Science
•
9th Grade
•
Medium
+1
Standards-aligned
Grace Paulson
Used 24+ times
FREE Resource
19 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
A chemical reaction is a change in which one or more substances are converted into ____________________ substances.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
The substances present at the ____________________ of the reaction, the substances that react, are called reactants.
3.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
The ____________________ substances produced are called products.
Tags
NGSS.MS-PS1-2
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
In the 1770s, French chemist Antoine Lavoisier determined that the total ____________________ of the products of a reaction always equal the total ____________________ of the reactants.
Tags
NGSS.MS-PS1-5
5.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
When no coefficient appears, a coefficient of ______ is assumed.
Tags
NGSS.MS-PS1-5
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Chemists commonly do not work with individual atoms, molecules and ions. They work with larger quantities of reactants, with masses that can be expressed in ____________________.
Tags
NGSS.MS-PS1-5
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
How many moles make up 50.0 g of NO₂(g)?
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