Textbook Problems

1.All samples of a given substance have the same intensive properties because all substances have certain properties.

2. Three states of matter are solid, liquid, and gas.

3. The two categories used to classify physical changes are reversible and irreversible.

4.Identify Name two categories used to classify properties of matter.

Intensive and Extensive properties.
5.Interpret Tables Which property in the Physical Properties of Some Substances table can most easily distinguish sodium chloride from the other solids?

The color is the only white one.

6.Compare and Contrast In what way are liquids and gases alike? In what way are liquids and solids different?

Liquids and gases are similar because they both have an indefinite shape.  They      are different because gas does not have a fixed volume whereas water does.
7.Explain Is the freezing of mercury a reversible or irreversible physical change? Explain your answer.

Freezing mercury is a reversible physical change because you can melt it again.
8.Explain why samples of platinum and copper can have the same extensive properties but not the same intensive properties.

Because some copper or platinum have different types causing them to be different even though they are the same in mass.                                                                          

12.Identify How are mixtures classified?

Homogenous and Heterogenous
13.List What type of properties can be used to separate mixtures?

Filtration and Distillation
14.Explain the term phase as it relates to homogeneous and heterogeneous mixtures

Phase is used to describe any part of a sample with uniform composition and                               ‘          properties.
15.Classify Classify each of the following as a homogeneous or heterogeneous mixture.
a. food coloring Homogenous
b. ice cubes in liquid water Heterogenous
c. mouthwash Homogenous
d. mashed, unpeeled potatoes Heterogenous
16.Compare and Contrast How are a substance and a solution similar? How are they different?

Substances and solutions are both unifor, but a solution is a mixture of multiple substances.
(I didnt quite get where 20 and 21 were)

12.Compare How is a compound different from an element?

A compound is made up of multiple elements
23.Compare How can you distinguish a substance from a mixture?

A Substance has a definite composition where as a mixture has a variable compostion
24.Identify What are chemical symbols and chemical formulas used for?

They are used to determine what things are made of and what they will make if combined.
25.Explain What makes the periodic table such a useful tool?
26.Identify Name two methods that can be used to break down compounds into simpler substances.
27.Classify Classify each of these samples of matter as an element, a compound, or a mixture.
a. table sugar compound
b. tap water compound
c. cough syrup mixture
d. nitrogen 28.

Identify Write the chemical symbol for each of the following elements:
a. lead           Pb
b. oxygen      O
c. silver      Ag
d. sodium      Na
e. hydrogen   H
f. aluminum  Al
29.Identify Name the chemical elements represented by the following symbols
a. C Carbon
b. Ca Calcium
c. K Potassium
d. Au Gold
e. Fe Iron
f. Cu Copper