Physical Science: Unit 1 Chapter 4

The substance that is produced at the end of a chemical reaction

This type of chemical reaction breaks down a substance into multiple

Substance giving off a smell or _____ while being combined is a indicator of a chemical reaction

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

H and O react to form water. How do we know a chemical reaction has occurred at the atomic level?

This type of chemical reaction combines multiple substances into one

Formed when two or more atoms chemically combine

A _____ is a solid that forms during a chemical reaction

The substance initially involved in a chemical reaction

A unexpected change in _____ is an indicator that a chemical change has occurred

Smallest part of a substance

Which of the following is the best desrciption of the results of chemical reaction

Which is not an observable sign that indicates a chemical reaction has occurred?

This can increase or decrease dramatically to indicate a chemical reaction