8.6E Conservation of mass
Interactive Video
•
Science
•
8th Grade
•
Medium
+3
Standards-aligned
Mark Palmer
Used 3+ times
FREE Resource
25 questions
Show all answers
1.
SLIDE QUESTION
30 sec • Ungraded
2.
DROPDOWN QUESTION
1 min • 1 pt
Scientists use the periodic table to organize important information about (a) . When a subscript follows a group of atoms in parentheses, the subscript applies to (b) atom in the group. Mass is a measure of how much (c) is in a system. During any ordinary chemical or physical change, the total mass of the substances involved (d) after the change. New substances formed during a chemical reaction are made up of (e) atoms as the atoms of the substances that reacted.
Answer explanation
Scientists use the periodic table to organize important information about elements. Subscripts apply to every atom in the group. Mass is a measure of how much matter is in a system. During any ordinary chemical or physical change, the total mass of the substances involved stays the same. New substances formed during a chemical reaction are made up of the same atoms as the atoms of the substances that reacted.
Tags
NGSS.MS-PS1-5
3.
DROPDOWN QUESTION
1 min • 1 pt
Look at the chemical Equations to help you fill in the blanks.
Reactants atom counts: C = (a) , O = (b)
Products atom counts: C = (c) , O = (d)
The chemical equation is (e) .
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a reaction A + B ----> C, reactant A has 5 g and product C has 9 g. How many grams does reactant B should have?
4 g
5 g
9 g
14 g
0 g
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
DROPDOWN QUESTION
1 min • 1 pt
If a reaction starts with a total 75 g of reactants,
it should produce a total of (a) of products.
Tags
NGSS.MS-PS1-5
6.
LABELLING QUESTION
2 mins • 1 pt
Label the reactants and products of the chemical reaction shown.
Reactants
Products
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
As shown in the photo, zinc and hydrochloric acid are combined in a test tube. What can you explain about the chemical reaction taking place? Select all that apply.
The mass of the products is exactly the same as the mass of the reactants.
At least one new product formed is a gas.
Molecules are rearranging into different molecules.
Atoms are changing into different atoms.
Answer explanation
The atoms rearrange and form different substances, but the atoms themselves do not change. The bubbles indicate that a gas is forming.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports
Continue with Google
Continue with Email
Continue with Classlink
Continue with Clever
or continue with
Microsoft
%20(1).png)
Apple
Others
Already have an account?
