WorksheetsConservation of Mass Test Review
Total questions: 13
Worksheet time: 7mins
Imagine Benjamin, Abigail, and Oliver are budding scientists experimenting in their school lab. They mix 25 grams of Reactants in a closed system. Can you guess how many grams of products they should have?
25g
50g
10g
15g
Nora, Henry, and Noah are having a debate. Nora thinks the equation is balanced, but Henry and Noah aren't sure. Who do you agree with?
I agree with Nora, the equation is balanced
I agree with Henry and Noah, the equation is not balanced
Science whiz Zoe just mixed some chemicals in a beaker and showed the equation to Ethan and Abigail. They're scratching their heads! Can you help them figure out: Is the equation balanced?
yes
no
Charlotte, Ethan, and Avery are on a space adventure to discover new planets! They come across an alien artifact, and Charlotte wonders about the measure of the amount of matter it contains. Can you help them figure out what term describes this measure?
mass
volume
weight
density
Oliver, Olivia, and Ava are on a quest to find the smallest unit of an element. What do they discover?
A magical compound
A tiny atom
A mysterious molecule
A peculiar product
In a thrilling chemistry class experiment, Noah and Ava mixed various chemicals together. To their amazement, new substances started to form! What do we call these new substances that appear as a result of a chemical reaction?
products
reactants
coefficients
subscripts
Imagine Daniel and Benjamin are in a science lab, about to start a fun experiment. What would we call the substances they have at the start of their chemical reaction?
subscripts
coefficients
reactants
products
Olivia is working on a chemistry puzzle and needs to know: How many iron atoms are in
Fe(NO3)2? Can you help her out?
1
2
3
6
Elijah, Mia, and Lily are playing with building blocks and noticed that no matter how they rearrange them, the number of blocks stays the same! This reminds them of a science principle. The Law of Conservation of Mass says that matter can neither be __________ or __________. Can you help them figure out the missing words?
created; destroyed
recycled; renewed
subtracted; added
joined; separated
Imagine Priya and Ethan are in a lab, combining sodium and chlorine to witness a chemical reaction. As they mix these elements together, they form sodium chloride. In this exciting experiment, sodium chloride is known as the:
Originator
Reactant
Product
Produce
Arjun, Emma, and Abigail are having a water balloon fight! Each balloon is filled with 4H2O. If they use one balloon each, how many Hydrogen atoms will be in play?
6
8
2
4
Arjun, Aria, and William are having a heated debate in their chemistry class. They are discussing whether the equation H2+O2 →H2O follows the Law of Conservation of Mass. What do you think?
Yes, because the atoms are equal.
No, because more info is needed.
No, because there are more atoms in the product.
No, because there are more atoms in the reactant.
During a fun science experiment, Nora, Abigail, and Benjamin discovered that substances can neither be _______ nor ___________. This principle is known as the law of conservation of mass. What words complete the sentence?
Built; torn down
Blended together; separated
Created; destroyed
Condensed; extracted
