Category 1
Category 2
Category 3
Category 4
Category 5
100

Which of the following describes the process of sublimation?

Solid to gas

100

Which subatomic particle has a positive charge?

Proton

100

What type of bond is formed when electrons are shared between atoms?

Covalent bond

100

Which element is the most electronegative?

Fluorine

100

What is the pH of a neutral solution at 25°C?

7

200

Which of the following is an example of an exothermic reaction?

a) Melting ice
b) Boiling water
c) Combustion of gasoline
d) Evaporating alcohol

c) Combustion of gasoline

200

What is the empirical formula for a compound with the molecular formula C6H12O6?

CH2O

200

In a redox reaction, the substance that loses electrons is:

Reduced

200

Which gas law states that the volume of a gas is directly proportional to its temperature, provided pressure is constant?

Charles's Law

200

Which of the following correctly represents the Lewis structure for water (H₂O)?
a) H-O-H
b) H=O=H
c) H-O-H with two pairs of dots around oxygen
d) H-O-H with four pairs of dots around oxygen

c) H-O-H with two pairs of dots around oxygen

300

Which of the following represents an isotope?

a) ¹²C and ¹²O
b) ¹²C and ¹³C
c) ¹²C and ¹⁴C
d) Both b and c  

 d) Both b and c  
 
 

300

What is the oxidation state of sulfur in H₂SO₄?

c) +6

300

The number of moles of solute per liter of solution is known as:

Molarity

300

What is the product of the reaction between an acid and a base?

Salt and water

300

Which of the following is a property of ionic compounds?
a) High melting points
b) Poor electrical conductivity in solid form
c) Solubility in water
d) All of the above

c) Solubility in water

400

Which of the following ions has the smallest radius?
a) Na+
b) Mg2+
c) Al3+
d) K+

c) Al3+

400

What is the chemical formula for ammonium sulfate?

(NH₄)₂SO₄

400

What is the name of the process in which a solid is separated from a liquid in a heterogeneous mixture?

Filtration

400

What is the main intermolecular force present in water?

 Hydrogen bonding

400

Which of the following metals will react most vigorously with water?

a) Magnesium
b) Aluminum
c) Potassium
d) Iron


c) Potassium

500

Which functional group is present in alcohols?
a) Carboxyl group
b) Amino group
c) Hydroxyl group
d) Carbonyl group

Hydroxyl group

500

What is the common name for the compound NaHCO₃?

Baking soda

500

What type of nuclear reaction powers the sun?

Nuclear fusion

500

which type of radioactive decay results in a +β  being emitted

Positron emission

500

Which statement describes a property of gases according to the kinetic molecular theory?
a) Gas particles are in constant, random motion
b) Gas particles attract each other
c) Gas particles have significant volume
d) Gas particles move slower at higher temperatures

a) Gas particles are in constant, random motion