Vocabulary
Characteristics of substances that don't change.
What is properties?
True or False: Changes in the state of matter, like ice melting, are physical changes.
What is true?
A model that describes the arrangement and interactions of particles.
What is a particle model?
True or False: Matter can be created during a chemical reaction.
What is False?
This is the term for anything that has mass and takes up space.
What is matter?
Name two pieces of evidence that indicate a chemical reaction has occurred.
What are color change and gas production?
In a particle model, this happens to the arrangement of particles during a chemical reaction.
What is rearrange?
This scientific law states that matter cannot be created or destroyed during a chemical reaction.
What is the Law of Conservation of Mass?
True or false: Properties change for a substance.
What is false?
The ability to mix in a liquid.
What is solubility?
True or False: Bubbling always means a chemical reaction has occurred.
What is false?
A particle model of a gas shows particles moving in this way.
What is rapidly and freely?
During a chemical reaction, the total mass of the closed system:
What is stays the same?
(doesn't change)
Substances has this to help identify it.
What is properties?
What is a chemical reaction?
In the reaction of vinegar and baking soda, the release of bubbles is evidence of this.
What is gas production?
A particle model of a solid shows particles moving in this way.
What is tightly packed, vibrating against each other?
True or False: In an open system, the total mass of a reaction can appear to change if gas escapes.
What is true?
These gases sink downward when surrounded by less dense gases.
What is denser gases?
Made of one type of material throughout.
What is a substance?
The name for the substances at the start of a chemical reaction.
The name of the substances at the end of a chemical reaction.
What is reactants ?
What is products?
True/False: In a chemical reaction, the particles that make up the reactants are destroyed.
What is false?
The mass of the products in a chemical reaction equals this.
What is the mass of the reactants?
When new substances are produced from old substances, some of the particles that make up the original substances.
What is break apart and/or join together to make different types of particles?