Chapter 6 Balancing Chemical Equations And Chemical Change Flashcards
Matter
Anything that has mass or takes up space
Chemistry
The study of matter and how it changes
What are the two properties of matter
Physical and chemical
Physical property
A characteristic of of a substance that can be observed without changing the substance into another substance
Chemical property
A characteristic of a substance that describes its ability to change into other substances
Physical change
A change that alters the form or appearance of a substance but does not make the substance into a new substance
Chemical reaction
A change in matter that produces one or more new substances, it is a chemical change
Chemical change
Occupies when bonds break and new bonds form
What is the evidence for a chemical reaction?
Changes in energy and formation of a new substance
Precipitate
A solid that forms from solution during a chemical reaction
Endothermic reaction
A reaction in which energy is absorbed
Exothermic reaction
A reaction that releases energy in a form of heat
Conservation of mass
During a chemical reaction matter is not created or destroyed