Questions related to chemistry test your knowledge of chemical properties and
processes. You may be asked questions about states of matter, properties of matter,
phase changes, chemical bonds, chemical solutions, chemi
...
Questions related to chemistry test your knowledge of chemical properties and
processes. You may be asked questions about states of matter, properties of matter,
phase changes, chemical bonds, chemical solutions, chemical reactions, and acids and
bases. You may be asked to balance chemical equations. Let’s get started in
understanding how chemistry is important on the ATI TEAS.
COVERED AREAS
❖ Understanding States of Matter.
❖ Understanding Changesin States of Matter.
❖ Understanding Properties of Matter
❖ Understanding Chemical Bonds.
❖ Understanding Chemical Solutions.
❖ Understanding Chemical Reactions.
❖ Understanding Acid Base Balance.
❖ Understanding Balancing Chemical Equations.
UNDERSTANDING STATESOF MATTER
Matter is made up of microscopic particles that move different speeds depending on the
energy they are exposed to. We measure this energy as temperature. The molecules can
move either quickly and randomly or hardly at all.
When the energy is high, matter take the form of a gas, in which molecules are moving
about quickly and are far apart. Gases have no fixed form. Molecules are free to move at
random past each other, and they tend to fill any container that holds them. If a gas is
not contained, its molecules will disperse.
Lower temperatures result in a liquid, in which molecules cohere but are fluid.
Coherence means that the molecules remain close together, but they can change
position by sliding over one another. In liquids, molecules move less freely than in a
gaseous state, sliding past one another. They have a fixed volume but will flow freely
unless they fill a portion of a container.
When the temperature islow, matter takesthe form of a solid, in which molecules are
packed closely together and retain their positions. Solid matter is rigid, and molecules
retain a uniform spacing. A solid has a defined form, which is brittle. It can be broken
into pieces but tends to stay together.
A somewhat unusual state of matter is plasma, which is like a gas in many of its
properties but carries an electric charge.
The TEAS focus on solids, liquids, and gases.
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