Science for ELLs

1. Elements, Compounds
and Mixtures

2. Word Study
The word solution has different meanings.
Solution can mean
“the answer to a
problem.”
It was easy to find the
solution to the math
problem.
Solution can also
mean “a type of
mixture.”
He mixed a solution
of salt and water.
5 x 8 = ?

3. Word Study
The word suspension also has different
meanings.
Suspension can
mean “to force
someone to leave a
place (like school)
for a period of time as
a form of punishment.”
Suspension can also
mean “a substance
(usually a liquid) that
has very small pieces of
a solid material mixed
in it.”
(learner’sdictionary.com)

4. homo
means “the
same”
hetero
means “not the
same”
Word Study: Prefixes

5. Pure Substances
 A pure substance is matter
that is made of only one kind of
particle. For example, the oxygen
in a tank is a pure substance.

6. Elements
 An element is a pure
substance that is made of only
one type of atom. For example,
aluminum is an element.

7. Compounds
 A compound is a pure
substance made of two or more
elements that join chemically.
Water is a compound of hydrogen
and oxygen.

8. Common Compounds
 Table salt is a common
compound. The elements sodium
and chlorine join to make salt.
 Sugar is also a common
compound. It is made of the
elements carbon, hydrogen and
oxygen

9. Mixtures
 A mixture contains two or more
pure substances. The substances
are mixed together. They do NOT
join chemically. Air is a mixture
of gases.
air

10. Mixtures - Facts
Mixtures are NOT pure substances
In a mixture 2 or more substances
come together
They do NOT join chemically
They can be heterogeneous or
homogeneous

11. Heterogeneous Mixtures
A suspension is one kind of
heterogeneous mixture. When you shake
salad dressing, drops of oil and drops of
vinegar mix but you an still see the
different parts.

12. Homogeneous Mixtures
A solution is a homogeneous mixture. In
a solution , one material dissolves in
another material. You cannot see the
different parts in this kind of mixture.
For example, think about adding sugar to a
glass of tea. The sugar dissolves and you
can’t see it.

13. Watch These Videos to
Support Your Learning
 The Chemistry of Fire
 Chemical Change
 Chemistry Basics: Matter (Look for the
3rd title). This is a whole length video.
Watch just one or two segments a day.
You will need your Discovery Education
log in information.