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Compounds
Test Description: Questions about compounds
Instructions: Answer all questions to get your test result.
1) Two or more elements chemically bonded together is ....
A
an element
B
a solution
C
a mixture
D
a compound
2) The tiny number like the 2 in H2O is called the ....
A
subscript
B
exponent
C
power
D
subtext
3) When elements combine, what happens to their original properties?
A
original properties stay the same
B
original properties are changed or lost
4) How many sulfer (S) atoms in H2SO4?
A
0
B
2
C
4
D
1
5) What two elements combine to make salt?
A
hydrogen and chlorine
B
hydrogen and oxygen
C
sodium and chlorine
D
sodium and carbon
6) The abbreviation for a compound is called the ....
A
chemical formula
B
chemical symbol
C
chemical equation
D
atomic number
7) Which is an example of a chemical reaction?
A
cutting paper
B
dissolving Kool-Aid in water
C
combining baking soda and vinegar
D
melting ice
8) Which statement describes sodium?
A
a gray metal that dissolves in water
B
a hard gray metal that does not react with anything
C
a gray metal that reacts with water
D
a greenish gas that is used in swimming pools
9) Color change, temperature change, or bubbles are signs of a ....
A
substance dissolving
B
chemical reaction
C
physical reaction
D
chemical element
10) In the chemical formula, Fe2O3, there are 3 atoms of what element?
A
osmium
B
ferrum
C
iron
D
oxygen
*select an answer for all questions
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