Matter & Its Properties
What is matter?
Matter is anything that has mass and takes up space.
What is a physical change?
A change in which a substance changes its physical form but keeps its original properties.
Name one of the types of reactions we learned.
Chain reaction, decomposition, combustion, synthesis
What does the pH scale measure?
The acidity or basicity of a substance.
What are properties of matter?
Properties are characteristics used to describe or group substances.
What is a chemical change?
A change where two or more substances combine to form a new substance.
Describe a chain reaction.
One event causes a sequence of reactions to occur, like a series of matches lighting.
What is the pH of a neutral substance?
A neutral substance has a pH of 7.
Give an example of a property of matter.
Examples include color, density, boiling point, and melting point.
Is melting ice a physical or chemical change?
Physical
What is a decomposition reaction?
A reaction where a compound breaks down into two or more substances.
Name a common acidic household item.
Lemon juice or vinegar
What does mass measure?
Mass measures how much matter is in an object.
What clues can tell you a chemical change has occurred?
Heat, light, gas production, color change, or odor emission.
What is a synthesis reaction?
A reaction where two or more substances combine to form a new substance.
Name an example of a basic substance.
Soap, ammonia, bleach, toothpaste