

Understanding Elements, Compounds, and Chemical Reactions
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard
Evelyn Hayes
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the smallest part of an element that can exist?
Compound
Electron
Atom
Molecule
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about elements?
They are made of different types of atoms.
They can be found in the periodic table.
They are always in the form of molecules.
They are chemically combined in fixed proportions.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a compound?
A substance made of one type of atom.
A mixture of different molecules.
A single element in molecular form.
A substance with two or more elements chemically combined.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is water represented in a chemical formula?
H2
HO2
O2
H2O
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must be done to a simple chemical equation?
It must be balanced.
It must include all elements in the periodic table.
It must be written in molecular form.
It must be written in words.
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