Chapter 4.pdf

The same properties of water that cause it to form beads
on the surface of a leaf allow water to form a column
inside a plant's stem. The column of water stretches
from the roots to the top of even the tallest trees.
Skills You Will Use
In this chapter, you will:
• investigate and identify the physical and chemical
properties of substances
• plan and conduct an inquiry into the properties of common
substances
• conduct tests to identify gases
Concepts You Will Learn
In this chapter, you will:
• assess the usefulness and hazards of polyethylene
• use appropriate terms to describe elements and
compounds
• describe the physical and chemical properties of common
elements and compounds
Why It Is Important
Plastic, diamond, road salt, and table salt are different types
of matter with their own special properties. Understanding
the properties of matter helps us to work safely with different
substances and to change them to make useful things.
Before Reading
The Language of Chemistry
Make a “Language of Chemistry” chart for the terms
below. Your chart should have three columns: Key Term,
Before Reading, and During Reading. Under Key Term,
write each word on its own row in the chart. Record
what you think each term means in the Before Reading
column of the chart by either writing a statement or
drawing a diagram. As you read the chapter, make notes
for yourself in the During Reading column to clarify your
ideas about each term.
Key Terms
• adhesion • chemical change • chemical property
• cohesion • combustibility • mechanical mixture
• physical property • pure substance • solution
Matter has physical and chemical properties. 135