Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
Brittleness and a high melting point are properties of __________________.
|
ionic compounds
|
|
|
What kind of compound rarely dissolves in water?
|
covalent compounds
|
|
|
What substance has a sour taste and produces hydrogen gas when it reacts with some metals?
|
acid
|
|
|
Which substance has a bitter taste and a slippery feel?
|
base
|
|
|
If almost all the molecules of an acid break apart when dissolved in water, the acid is ______________________.
|
a strong acid
|
|
|
What rating is neutral on the pH scale?
|
7
|
|
|
When an acid and a base neutralize each other, what remains?
|
water & salt
|
|
|
Most compounds are _____________________.
|
covalent compounds
|
|
|
What is measured by pH?
|
hydronium ion concentration
|
|
|
__________________ is a value used to expressed the acidity or alkalinity (basicity) of a solution.
|
pH
|
|
|
What ionic compound is formed when the positive ions of a base and the negative ions of an acid combine?
|
salt
|
|
|
What is the reaction of an acid and a base that forms a neutral solution of water and a salt?
|
neutralization reaction
|
|
|
Citric acid is a weak acid. Explain what that means.
|
only a few molecules of an acid break apart
|
|
|
What happens when acids and bases come in contact with each other?
|
they neutralize each other
|
|
|
Sodium chloride, sodium nitrate and calcium sulfate are all _________________.
|
salts
|
|
|
Ionic compounds can be formed when ________________ react with ________________________.
|
metals, nonmetals
|
|
|
What kind of structure does an ionic compound have?
|
crystal lattice
|
|
|
Covalent compounds usually have a ________________ melting point.
|
low
|
|
|
What does it mean when a substance is said to be soluble?
|
it can be dissolved in another substance
|
|
|
Which compound is formed when a group of atoms share electrons?
|
covalent
|
|
|
What happens when acid is added to blue litmus paper?
|
color changes to red
|
|
|
Identify a use for the following acids.
a. hydrochloric acid b. nitric acid c. sulfuric acid d. carbonic acid |
a. hydrochloric acid - used to make metals from their ores. b. nitric acid - used to make fertilizers, rubber, and plastics. c. sulfuric acid - used to make paper, paint, detergents, and fertilizers d. carbonic acid - used to give a sharp taste to soft drinks. |
|
|
Acids can be _________________________.
|
corrosive
|
|
|
The pH of a solution shows the concentration of what type of ion?
|
hydronium ion
|
|
|
What type of solution has a pH greater than 7?
|
base
|
|
|
What type of solution has a pH less than 7?
|
acid
|
|
|
What is the pH of a neutral solution?
|
7
|
|
|
What does an indicator show?
|
can identify whether a solution contains an acid or base
|
|
|
What color does a base change red litmus paper to?
|
blue
|
|
|
Any compound that increases the number of hydroxide ions when dissolved in water is a/an __________________________________.
|
base
|
|
|
Any compound that increases the number of hydronium ions dissolved in water is a/an _______________________________.
|
acid
|
|
|
What can corrosive substances destroy?
|
body tissue, clothes, and many other things
|
|
|
What flavor do acids have?
|
sour flavor
|
