Chemical Reactions

In a chemical process, atoms regroup into different ___ to form new substance w/ different properties

Hydrogen and oxygen react to form water How do we know a chemical reaction occured?

Which is NOT an example of an endothermic reaction?

The substance that is produced from a chemical reaction

Formed when 2 or more atoms chemically combine

Which of the following are not chemical reactions

The substances initially involved in a chemical reaction

A chemical reaction involving 1 zinc, 2 hydrogen and 2 chlorine atoms will have how many atoms of each element?

The number of atoms and the properties are the same in a the reactants and the products in a chemical reaction.

The product of a chemical reaction contain the same number of atoms as the reactants but have different properties

Which is not a characteristic of a chemical reaction

A process that leads to the transformation of one set of chemical substances to another

Rust forming on a piece of iron is an example of which of the following?

Physical and chemical characteristics of matter used to describe or identify a substance

A solid substance that forms and separates from a solution that may indicate a chemical reaction occurred

A chemical reaction is a process where substances change into different substances

Smallest part of a substance

Which of the following is the best description of the results of a chemical reaction?