Chapter 2
Chapter 2
Chapter 2 or 3
Chapter 3
Chapter 3
100
Each family in the periodic table has its own characteristic properties based on the number of
What is valence electrons
100
Molecular compounds do not conduct electricity because they
What is do not break up into ions?
100
A chemical bond formed when two atoms share electrons is called a(n)
What is a covalent bond?
100
In water, bases form
What is hydroxide ions?
100
Acids are describe as corrosive because they
What is eat away at other materials?
200
An ionic bond is the attraction between
What is oppositely charged ions?
200
A covalent bond in which electrons are shared unequally is
What is polar?
200
Different enzymes work best at different pH values.
How is pH important during digestion?
200
Normal rainfall is slightly acidic, which means its pH must be
What is between 5 and 7.
200
When you add so much solute that no more dissolves, you have a
What is saturated solution?
300
Ions that are made of more than one atom are examples of
What is polyatomic ions?
300
Molecules that contain two polar bonds are
What is sometimes polar?
300
Each of its particles becomes surrounded by water molecules.
What is when a solid compound dissolves in water?
300
You can find ph of a substance by using.
What is litmus indicator?
300
How can a scientist safely tell whether an unknown solution is salt water or sugar water?
What is by testing the electrical conductivity of the solution?
400
They form hard, brittle crystals with characteristic shapes.
What is a characteristic property of ionic compounds?
400
Positive ion
In the chemical formula for an ionic compound, which item is written first?
400
In Ernest Rutherford's gold foil experiment, most positively charged particles passed through the foil, but a few particles were deflected strongly. This result caused Rutherford to infer
That an atom's positive charge must be clustered in a tiny region in its center, called the nucleus.
400
How does chemical digestion differ from mechanical digestion?
Chemical digestion requires enzymes.
400
How would a solute affect the boiling point of water?
What is the water will boil at a higher temperature?
500
In what form can an ionic compound conduct electricity.
What is dissolved in water?
500
Ductile
What is metals that be pulled into thin strands or wires?
500
Metals can be rolled into thin sheets, as in aluminum foil, or beaten into complex shapes.
What is malleable?
500
How is a solute different from a solvent in a solution?
What is the solute is present in a smaller amount?
500
They turn blue litmus paper red.
What is a characteristic property of acids?
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