Chemistry Quiz

What determines the temperature of a phase change?

• The color of the substance

• The mass of the substance

• The strength of intermolecular forces

• The density of the substance

What type of force is responsible for holding atoms together in a solid?

• Gravitational force

• Electromagnetic force

• Strong nuclear force

• Weak nuclear force

Which statement is true about the breaking of a single chemical bond?

• Energy is released

• Energy is absorbed

• No energy change occurs

• Energy is converted to mass

What occurs when two objects have opposite charges?

• They attract each other

• They repel each other

• They form a covalent bond

• They remain neutral

What does the depth of the potential energy well indicate in a potential energy diagram?

• The stability of the system

• The distance between atoms

• The strength of covalent bonding

• The direction of the force

What happens to the potential energy as two point charges approach each other?

• It decreases

• It increases

• It remains constant

• It becomes zero

What does the kinetic energy of a system depend on?

• The mass of the system

• The temperature of the system

• The volume of the system

• The intermolecular forces present

Which subatomic particle was discovered first?

• Proton

• Neutron

• Electron

• Positron

What happens to the potential energy of a system as two helium atoms get very close together?

• It increases

• It decreases

• It remains constant

• It becomes zero

What is the smallest distinguishable part of an element?

• Compound

• Atom

• Molecule

• Proton