Law of conservation of mass

Matter can neither be created nor destroyed: it can only be

• Destroyed a little bit

• made Invisible

• Transformed, changed

• None of the above

What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?

• None, They both will weigh the same

• The product always weighs more than the reactant

• The reactant will weigh more than the product

• They both will loose mass after the reaction

According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?

• The wood disappears.

• It stays the same chemically.

• The atoms in the wood and oxygen rearrange and form smoke and ash.

• Nothing.

The law of conservation of mass states that ________

• the total mass of reactants is more than the total mass of products

• the mass of a chemical reaction is not constant

• the mass of a chemical reaction remains constant

• the total mass of reactants is less than the total mass of products

The Law of Conservation of Mass States

• Energy cannot be created nor destroyed, it can only change form.

• Mass cannot be created nor destroyed, it can only change form.

• Mass can be created or destroyed, it cannot change form.

Measure of the amount of matter

• mass

• volume

• capacity

• density

The energy of movement is ___.

• potential energy

• kinetic energy

• mechanical energy

The more energy that particles have, the ___ they move.

• slower

• faster

According to the Kinetic Molecular Theory a liquid's- (Chose 2)

• particles are held close together by intermolecular forces

• particles are in constant motion

• particles are vibrating in place and closely packed

• particles are not moving

Why do you need to study Kinetic Molecular Theory?

• Just for fun

• To understand force and motion

• To understand earthquakes

• To understand behavior of solid, liquids, and gases