Flashcards in Chapter 14 - Chemical Compounds Deck (42)
When acids dissolve in water, molecules break apart from the acid to form ______ , which react with the water to form ______
Hydrogen ions (H+)
Acids increase the concentration of ______ when dissolved in water
When a base dissolves in water, molecules break apart to form _____
Hydroxide ions (HO-)
Bases increase the concentration of ______ when dissolved in water
Hydroxide ions (OH-)
Acids have a ______ taste.
Acids have a pH ______
Acids turn ______ litmus paper ______
Acids corrode with ______ to form ______
Name uses of acids
Areas of Industry and homes, including:
1. Keeps swimming pools free of algae
2. Stomach acids
3. Orange juice and lemon juice
Acids (can, cannot) conduct electric current when dissolved in water. Why or why not?
Can; hydronium ions are formed when an acid dissolves in water. They can move freely past each other and conduct electric current.
Most acids are ______, meaning they destroy, clothing, body tissue, etc.
Bases have a ______ taste
Bases have a ______ feel
Bases have a pH ______
Bases change ______ Litmus paper ______
Solutions of bases (can, cannot) conduct electric current. Why?
Solutions of bases increase the number of hydroxide ions in a solution. They can move freely past one another and conduct electric current.
Name 4 uses of bases
4. Cleaning agents (ammonia)
When a base reacts with an acid, a ______ occurs. This forms ______ (a ______ substance) and a ______
Neutral substances (such as ______) have a pH of ______
When all the molecules of an acid break apart to form hydrogen ions (which will then form hydroium ions)when dissolved in water, the acid is considered a ______ acid.
When only a few the molecules of an acid break apart to form hydrogen ions (which will then form hydroium ions)when dissolved in water, the acid is considered a ______ acid.
When all the molecules of a base break apart to form hydroxide ions when dissolved in water, the acid is considered a ______ base.
When only some of the molecules of a base break apart to form hydroxide ions when dissolved in water, the acid is considered a ______ base.
The pH scale is a measure of the _____ concentration in a solution
Hydronium ion concentration
If the hydronium ion concentration of a substance increases, then its pH does what? Why?
Decreases - Increasing hydronium concentration makes a substance more acidic, which decreases its pH
If the hydronium ion concentration of a substance decreases, then its pH does what? Why?
Increase - If the hydronium ion concentration decreases, then the substance is less acidic/more basic, which increases its pH.
Substances that change color in the presence of an acid or base are called what?
Ionic compounds contain _____ bonds ( _____)
An attraction between oppositely charged ions
Ionic compounds can be formed by the reaction of a _____ and a _____. Why?
When electrons are transferred from the metal atoms to the nonmetal atoms, the metal atoms lose an electron, making them positively charged ions. The nonmetal atoms gain an electron, making them negatively charged ions. The attraction between oppositely charged ions form ionic bonds, making it an ionic compound.