CHAPTER 1
CHAPTER 2
CHAPTER 3
CHAPTER 4
CHAPTER 9
100
The SI unit for mass is the
gram
100
T/F Particles in a liquid move around just as freely as particles in a solid.
False
100
A material is said to be ductile if it
can be pulled out, or drawn, into a long wire.
100
The chemical name for the compound with the formula Na2S is
sodium sulfide.
100
The only sure evidence for a chemical reaction is
the production of one or more new substances.
200
The volume of an irregular object can be measured by
submerging the object in water in a graduated cylinder.
200
The freezing point of water is the same as its
melting point.
200
The atomic number of an element is based on the
number of protons in its nucleus.
200
Ionic compounds are electrically
neutral.
200
T/F Synthesis is the process of making a more complex compound from simpler substances.
True
300
In the laboratory, volumes of liquid are usually measured with a(n)
graduated cylinder
300
What is vaporization?
a liquid becoming a gas
300
Mendeleev created the first periodic table by arranging elements in order of
increasing atomic mass.
300
When an atom loses an electron, it becomes a
positive ion.
300
A bottle of hydrogen peroxide that eventually turns into a bottle of water and oxygen gas is an example of a
decomposition reaction.
400
How do liquid water, ice, and water vapor differ from each other?
They are different states of matter.
400
According to Boyle’s law, when the pressure of a gas increases, its volume
increases
400
Group 17 is so reactive that many of its elements are already in __________
compounds
400
Which of the following groups contains the most reactive elements?
the alkali metals
400
Chemistry is
the study of matter and how matter changes.
500
Fireworks exploding in the sky and giving off light are an example of a(n)
exothermic change.
500
A graph that shows that the volume of a gas is directly proportional to its temperature demonstrates
Charles’s law.
500
This is the most common element in the universe
hygrogen
500
Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the “2” tell you?
There are two bromide ions for every magnesium ion.
500
What type of reaction is FeS + 2 HCl FeCl2 + H2S?
a replacement reaction