Chemical Reactions
Authored by Edward Garcia
Chemistry, Science
5th - 7th Grade
NGSS covered
Used 600+ times
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19 questions
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1.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Which of the following are signs of a chemical reaction?
Formation of a gas
A change in temperature
A change in color
A change in size
Tags
NGSS.MS-PS1-2
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
In a chemical reaction, the number of atoms in the reactants and the products...
Must be the same
Must be different
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the density of water?
1g/mL
3g/mL
7g/mL
2.3g/mL
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of these is NOT a sign of a chemical reaction?
A phase change
Formation of a precipitate
A color change
A temperature change
Tags
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
When a chemical reaction occurs...
New molecules and atoms are formed
Molecules and atoms are rearranged
Molecules and atoms disappear
Molecules and atoms are destroyed
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Is the chemical equation here balanced?
Yes
No
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Imagine you have an unknown substance in your hand. You know that it has a mass of 100g and a volume of 10cm3. What is the density of this unknown substance?
5g/cm3
11g/cm3
10g/cm3
25g/cm3
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