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WorksheetsChemical Reactions!!
Total questions: 14
Worksheet time: 21mins
Atoms are ...
Tiny particles that make up everything.
Large particles
Tiny particles
Adam's BF
Atoms can be torn apart.
True
False
Molecules & Atoms are made of
Bubbles
Gases
Particles
Energy
Molecules are 2 or more connected atoms.
True
False
There are 10,000's of atoms that make up everything in the world.
True - yes there are tons!
False - there are only a few types in diff. combinations.
In a chemical reaction ...
there's always an explosion.
atoms break apart.
atoms re-arrange.
atoms are destroyed.
The old substance at the start of a chemical reaction is called:
The product
The reactant
The NEW substance at the end of a chemical reaction is called:
The product
The reactant
To make a chemical reaction happen, you must add:
FIRE
Energy
Heat
Cold
What is the chemical formula?
H20
O2
HOOH
H2O2
What's the chemical formula for 2 of these molecules?
2 H2O2
H202
H4O4
H4O2
Could this reactant make this product?
No there's no H or O atoms in the reactants
Yes totally!
Could this reactant make this product?
No there's no H or O atoms in the reactants
Yes totally!
When you add electricity to water, is a new substance made?
Yes, water turns into 2 gases.
Yes, the gases created are flammable.
No, it's just water.
Yes, the atoms break apart and rearrange into a new molecule.
