M19 L1 Notes Quizizz - Chemical Changes
Authored by Grace Paulson
Science
9th Grade
NGSS covered
Used 24+ times
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19 questions
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1.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
A chemical reaction is a change in which one or more substances are converted into (a) substances.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
2.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
The substances present at the (a) of the reaction, the substances that react, are called reactants.
3.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
The (a) substances produced are called products.
Tags
NGSS.MS-PS1-2
4.
FILL IN THE BLANKS 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.
(a)
Tags
NGSS.MS-PS1-5
5.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
When no coefficient appears, a coefficient of (a) is assumed.
Tags
NGSS.MS-PS1-5
6.
FILL IN THE BLANKS 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 (a) .
Tags
NGSS.MS-PS1-5
7.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
How many moles make up 50.0 g of NO₂(g)?
(a)
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