Chemical Reactions Flashcards
What ALWAYS happens during a chemical change?
The composition of matter always changes
What are possible clues that a chemical change has occurred?
- A transfer of energy
- A change in color
- The production of gas
- Or the formation of a precipitate-is a solid that forms and settles out of a liquid mixture
How are the mass of the reactants and products of a chemical reaction related?
Because the mass of the product is always equal to the mass of the reactants
Chemical property
The ability of a substance to undergo a specific chemical change
Chemical change
A chemical change is also a chemical reaction the composition of matter always changes
Chemical reactions
In chemical reactions, Reactants—> Products
Reactant
A starting substance in a chemical reaction
Product
A substance formed in the chemical reaction(aka ending substance
A+B—>AB
Law of Conversation of Mass
During any chemical reaction, the mass of the products is always equal to the mass of the reactants
Mass reactants=Mass products
Mass is neither created nor destroyed
