Fireworks exploding, burning wood, digesting food, etc.
What is not an example of matter?
Light, energy, sound
The law of conservation of mass states that mass cannot be ________ or ________.
lost or made/created or destroyed
The substances resulting from the reaction.
Products
What is a chemical change?
When a chemical reaction takes place and at least one new product is made. This type of change is usually irreversible.
What is a physical change?
A change in the physical properties of a substance. This type of change is reversible.
Is the following an example of a physical change or chemical change? Melting ice cubes -
Physical change
What does 'conserved' mean?
To protect/save
True or False: The mass of an object changes when it goes through a physical or chemical change.
False
Define matter.
Anything that has mass and takes up space.
Adam has a bowl of skittles that has a mass of 200g. He separates the skittles by color, and weighs them all together. What is the total mass of the ingredients?
200g
Is the following an example of a physical change or chemical change? Milk going sour
Chemical change
True or False: A mixture of cake batter has a mass of 850g. Once it is cooked, the mass will remain the same.
True
Is the following an example of a physical change or chemical change? Cutting your hair.
Physical change
The amount of matter in an object is defined as:
Mass
What are the three forms of matter?
Solid, Liquid, Gas
The substances undergoing a change.
Reactants
Provide an example of a physical change.
Glass breaking, water evaporating, mixing candy pieces
Define the Law of Conservation of Mass.
No matter what kind of change takes place, the total mass is conserved. The total mass of the products will always equal the total mass of the reactants.
Is the following an example of a physical change or chemical change? Digesting food
Chemical change
Is the following an example of a physical change or chemical change? Burning a log.
Chemical change
Is the following an example of a physical change or chemical change? Mixing sand and water.
Physical change
Your experience on this site will be improved by allowing cookies.