12.
10.
8.
What variable does Boyle's law hold constant?
a) Volume
c) Pressure
b) Distance
d) Temperature
9.
Charle's law holds what variable constant?
a) Volume
b) Temperature
c) Pressure
d) Distance
What compound is magnesium dichloride?
a) MCI
b) MC 2
c) MgCl
11. CaCO3 represents a chemical
a) Formula
c) Symbol
What is the chemical formula for Fluorine trisulfide ?
a) FS
c) S3F
13. What is the formula for magnesium chloride?
a) Mg2Cl
c) MgCl
d) MgCl2
b) Subscript
d) Reaction
b) FS3
d) none of the above
b) Mg(ClO3)2
d) MgCl2
14. 2 atoms of hydrogen and 1 atem of oxygen combine to form water. What is the chemical formula for-water?:
a) H₂O₂
c) H₂O
b) HO₂
15. What state of matter has a definite volume but no definite shape?
a) Gas
c) Solid
b) Plasma
d) Liquid



Answer :

Let's tackle the questions one by one:

### Question 8:
What variable does Boyle's law hold constant?
Boyle's law states that the pressure of a given mass of gas is inversely proportional to its volume at a constant temperature.

Answer:
d) Temperature

### Question 9:
Charles's law holds what variable constant?
Charles's law states that the volume of an ideal gas is directly proportional to its absolute temperature at constant pressure.

Answer:
c) Pressure

### Question 10:
Complex question missing elements, hence skip for consistency.

### Question 11:
What compound is magnesium dichloride?
Magnesium dichloride is commonly known as magnesium chloride with the formula MgCl₂.

Answer:
d) MgCl2

### Question 12:
CaCO₃ represents a chemical:
CaCO₃ is the chemical formula for calcium carbonate.

Answer:
a) Formula

### Question 13:
What is the chemical formula for Fluorine trisulfide?
The chemical formula for Fluorine trisulfide is S₃F.

Answer:
c) S3F

### Question 14:
What is the formula for magnesium chloride?
The correct formula for magnesium chloride is MgCl₂.

Answer:
d) MgCl2

### Question 15:
2 atoms of hydrogen and 1 atom of oxygen combine to form water. What is the chemical formula for water?
Water is composed of 2 hydrogen atoms and 1 oxygen atom, hence its chemical formula is H₂O.

Answer:
c) H₂O

### Question 16:
What state of matter has a definite volume but no definite shape?
A liquid has a definite volume, but it doesn't have a definite shape and takes the shape of its container.

Answer:
d) Liquid

Let's summarize the answers for clarity:
8. d) Temperature
9. c) Pressure
11. d) MgCl2
12. a) Formula
13. c) S3F
14. d) MgCl2
15. c) H₂O
16. d) Liquid