chapter 2 letter

School to Home Letter
Scott Foresman California Science
Chapter 2: Changes in Matter
California Standard
Physical Sciences 1.0 Elements and their combinations
account for all the varied types of matter in the world.
Here are the key concepts
we are learning:
• Physical changes do not change the chemical properties of
a substance.
• Chemical changes occur when one substance is chemically
changed into a new substance with different properties.
• When matter changes state, a physical change occurs.
• A substance’s melting temperature is a physical property
that can be used to help identify the substance.
• Metals have a wide range of melting temperatures.
• A chemical equation shows what happens during a
chemical reaction. It includes both reactants and products.
• Three types of chemical reactions are combination,
decomposition, and replacement reactions.
Vocabulary Review
Your child will learn these
vocabulary words:
physical change
chemical change
chemical equation
Help your child make these
words a part of his or her own
vocabulary by reviewing them
together. You can help your
children understand these words
using simple kitchen procedures,
such as boiling water, mixing
ingredients, cooking an egg, etc.
• Chemical properties of substances can be used for many
practical purposes.
• Chemical properties can help identify substances and
separate mixtures.
Math in Science Have your child find some
household products that are chemical compounds.
Examples include table salt, baking soda,
vinegar, and detergent. Have your child research
to find the chemical elements that make up each
compound. For example, water is made up of
hydrogen and oxygen. Have your child make a
table showing what he or she found.
NASA Your child will learn about the Glenn
Research Center drop tower, where objects can
experience near-weightless microgravity. Each
year, teams of high school students compete in
the DIME competition, which stands for Dropping
in a Microgravity Environment. Have your child
think of an experiment that he or she would like
to conduct at the Glenn Research Center’s drop
tower. Ask him or her to outline the experiment
and the question the experiment is designed to
answer. DIME rules do not allow the use of a
living organism in the experiment.
Career Your child will learn about analytical
chemists who work for NASA designing materials
that can be used in space. Have your child gather
different materials in your home, such as kitchen
utensils, toothbrushes, and food containers. Ask
your child to make a list of which products might
be useful in space.
© Pearson Education, Inc.
Take-Home Activities