Which has the greatest amount of solute dissolved in the solvent?
a. suspension
b. a dilute solution
c. a concentrated solution
d. a saturated solution
c. a concentrated soltuion
100
Which is true concerning mixtures?
a. the elements can always be easily separated
b. two or more elements are involved
c. the elements are often chemically bonded
d. all of the above
b. two or more elements are involved
100
What information is supplied by the chemical formula of a compound?
The elements and the number of atoms of each element that make up the molecule.
100
Which statement is true concerning a solution?
a. it is a liquid mixture
b. water is always involved
c. the materials chemically combine
d. all of the above
a. it is a liquid mixture
100
The blending together of materials not chemically combined.
mixture
200
How are organic compounds different from inorganic compounds?
Organic compounds carbon, inorganic do not.
200
How are cations formed?
They occur when electrons are lost.
200
What is a solvent?
The part that dissolves another material.
200
Which is not an organic compound?
a. sand
b. carbon monoxide
c. carbon dioxide
d. carbonic acid
a. sand
200
Caused by the transfer of electrons.
Ionic Bond
300
Which is not a compound?
a. water
b. copper
c. rust
d. air
b. copper
300
How are compounds different from mixtures?
Their elements chemically combine.
300
Which of these compounds demonstrates covalent bonding?
a. mercury
b. sugar
c. iron rust
d. rust
b. sugar
300
What is the force that binds atoms together?
Chemical bond
300
Atoms chemically combined.
Compound
400
What is the valence of an atom?
The number of electrons that can be lost or gained from an atom.
400
In a salt-water solution, the salt is called the _____.
Solute
400
Carbonated beverages are mixtures of what main components?
Carbon dioxide and water
400
What type of bond is similar to a covalent bond except that extra electrons are left over?
A metallic bond
400
Caused by the sharing of electrons.
Covalent bond.
500
Solutions made of two or more metals are called _____.
Alloys
500
If you want to dilute a solution, what could you do?
Add more solvent.
500
Which of the following is a suspension?
a. sea water
b. wet cement
c. muddy water
d. none of these
c. muddy water
500
What valence would an atom have if it has 3 electrons to give?