Academic Bowl Science

What is the law of conservation of mass?

• Mass can be created in a chemical reaction.

• Mass is neither created nor destroyed in a chemical reaction.

• Mass is only destroyed in a chemical reaction.

• Mass can change forms but is always lost.

What is Newton's 3rd Law of Motion?

• For every action, there is an equal and opposite reaction.

• An object in motion stays in motion unless acted upon by an external force.

• The force of gravity is proportional to the mass of the objects involved.

• For every force, there is a reaction force that is equal in size and opposite in direction.

What is a compound?

• A substance made up of atoms of two or more different elements joined by chemical bonds.

• A mixture of two or more substances that retain their individual properties.

• A single element that cannot be broken down into simpler substances.

• A solution where one substance is dissolved in another.

What is the boiling point of water?

• 90 degrees Celsius (194 degrees Fahrenheit)

• 100 degrees Celsius (212 degrees Fahrenheit)

• 110 degrees Celsius (230 degrees Fahrenheit)

• 80 degrees Celsius (176 degrees Fahrenheit)

What is an example of a physical change?

• Burning wood

• Melting ice

• Rusting iron

• Cooking an egg

Which state of matter does not have a fixed volume or a fixed shape?

• Solid

• Liquid

• Gas, such as water vapor in air.

• Plasma

What is the definition of a solution?

• A heterogeneous mixture of two or more substances.

• A homogeneous mixture where one substance is dissolved in another.

• A pure substance that cannot be separated into simpler substances.

• A mixture that contains only one type of particle.

What is the difference between a homogeneous mixture and a heterogeneous mixture?

• A homogeneous mixture has a uniform composition, while a heterogeneous mixture has a non-uniform composition.

• A homogeneous mixture contains only one type of substance, while a heterogeneous mixture contains multiple types.

• A homogeneous mixture can be separated by physical means, while a heterogeneous mixture cannot.

• A homogeneous mixture is always a solid, while a heterogeneous mixture can be a liquid or gas.

What is the response to a stimulus?

• The effect or reaction that occurs due to a stimulus.

• A type of sensory input that triggers a reaction.

• A method of measuring environmental changes.

• An involuntary action that does not require a stimulus.

What is a mixture?

• A combination of two or more substances that are not chemically bonded.

• A single substance with uniform composition.

• A chemical reaction between two or more elements.

• A solution where one substance is dissolved in another.