Page 348 - ABCTE Study Guide_Neat

A strong acid.

B weak acid.

C strong base.

D weak base.

Answer

The correct answer is B. A pH value of 6 indicates a weak acid.
!

Review&

• Atoms are composed of a nucleus (containing protons and neutrons) surrounded by
electrons.
• Elements are defined by the number of protons in the atom.
• A neutral atom has equal numbers of electrons and protons, balancing the charge of the
atom.
• The periodic table organizes information about the chemical properties of the elements.
• There are several types of chemical bonds—ionic, covalent, and metallic.
• Matter is conserved in chemical reactions.
+
-
• The amount of hydrogen ions (H ) and hydroxide ions (OH ) in an aqueous solution
determines whether the solution is neutral, acidic, or basic.
• The relative strength of acids and bases is measured on a scale known as the pH scale.

Principles of Motion & Energy

Lesson Objective

In this section we will delve into and review some ideas about motion, force, and energy.

Previously Covered

In the previous lessons, we reviewed solutions, chemical reactions, and chemical equilibrium. We also
examined a few types of bonds and talked about predicting certain reactions.

Force and Motion

Force and motion are intimately intertwined concepts because a force is required to change an object's
motion. To get anywhere in understanding concepts in motion, you must first understand the terminology.
Be careful here. As is typical in science, familiar words are used with very specific meanings that are
different from their everyday meanings. Don't assume that because a word is familiar that you know its
meaning in this context.

What is the Difference between Speed and Velocity?