Chemical Reactions/equations Test
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- 1.What is chemistry?
- A.
The study of matter and show matter change
- B.
The study of the properties of matter and how matter change
- C.
None above
- D.
The study of ice melting from one point to other
- 2.Chemical Equations Are used to describe Chemical Equations
- A.
True
- B.
False
- 3.What are types of chemical reaction from following options?
- A.
Synthesis,Decomposition,single replacement,double replacement
- B.
Decomposition,Synthesis, and Single replacement
- C.
Decomposition
- D.
All Above
- 4.What Makes Chemical Equations Balanced?
- A.
Same Number of atoms of each element in both side of reaction
- B.
Same number of molecues in atoms
- C.
Same number of chemical reaction
- D.
None above
- 5.What is chemical formula?
- A.
A chemical symbol that has symbol
- B.
Tells the number of atoms of each element a compound . Subscrpit tells number of element in a molecues
- C.
Tells the number of atoms in chemical reaction
- D.
All Above
- 6.What is the LAW of Conservation of Mass?
- A.
CAN DESTORY OR CREATED
- B.
Chemical equation must be balanced because matter cannot be created or destoryed.
- C.
Cannot be created or destorey
- D.
Chemical equations
- 7.WHAT IS COEFFICIENT?
- A.
The number in front of an atom tells you how many atom there are in each molecues reaction
- B.
The number of atoms in reaction
- C.
Chemical Reactions can be also define as Cofficient?
- D.
What is ZChemcial REqaction
- 8.WHAT is the Coefficient?N2 + H2 <(Makes) NH3
- 9.Is A + B = AB A SYNTHESIS REACTION
- A.
True
- B.
False
- 10.WHAT IS THE DIFFERENT BETWEEN A SYNTHESIS REACTIONS AND DECOMPOSITION REACTIONS?
- A.
SYNTHESIS IS TO MAKE OR COMBINE
- B.
DECOMPOSITION IS TO BREAK DOWN
- C.
THEY ARE OPPOSITE OF EACH OTHERS
- D.
ALL ABOVE
- 11.
- A.
True
- B.
False
- 12.BOUNS QUESTION: CAN CHEMICAL EQUATIONS BE NOT EQUAL
- A.
True
- B.
False
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