Iron pyrite is a lustrous yellow mineral that consists of iron and sulfur. Its common name is fool's gold. Design a procedure to measure one of its characteristic physical properties so that you can distinguish it from real gold.

To test your knowledge, discuss the following topic with a study partner or in writing, ideally from memory.
The name, physical characteristics, and functions of each WBC type

Which is NOT a physical property of table sugar? A. forms solid crystals at room temperature. B. appears as white crystals. C. breaks down into carbon and water vapor when heated D. tastes sweet

Circle the BEST answer.
Which statement about a partner's death is true?
a The surviving partner's life will not likely change.
b Preparing for the event lessens grief.
c Grief cannot cause physical problems.
d Feelings of loss and emptiness occur.

When a light wave travelling in air enters water, the physical quantity that remains unchanged is (a) direction (b) wavelength (c) frequency (d) speed

Identify each of the following as a physical change or a chemical change:

(a) Grinding of a metal

(b) Fruit ripening

(c) Wood burning

(d) A rain puddle evaporating

Write formulas for and name the binary hydrogen compounds of the second-period elements (Li to F). Describe how the physical and chemical properties of these compounds change from left to right across the period.

Minerals are identified on the basis of

(1) the method by which they were formed

(2) the type of rock in which they are found

(3) the size of their crystals

(4) their physical and chemical properties

Tiffee Company identifies the following items for possible inclusion in the physical inventory. Indicate whether each item should be included or excluded from the inventory taking.

(b) 3,000 units of inventory in transit from a supplier shipped under FOB destination.

State whether each of the following is an example of a physical or chemical property of matter: (a) Graphite conducts electricity. (b) Bismuth, Bi, loses its iridescence upon melting. (c) A copper penny is smushed into an embossed souvenir.

Identify each of the following as a physical or chemical property: a. Gold is shiny. b. Gold melts at $1064^{\circ} \mathrm{C}$. c. Gold is a good conductor of electricity. d. When gold reacts with yellow sulfur, a black sulfide compound forms.

Which of the following mineral is used more for its chemical components than for its physical properties?

A. gypsum

B. gold

C. feldspar

D. clay minerals

E. hematite

Find the Sun’s Diameter. The Sun has an angular diameter of about 0.$5^{\circ}$ and an average distance of about 150 million km. What is the Sun’s approximate physical diameter? Compare your answer to the actual value of 1,390,000 km.

Give the physical states of the representative elements in the fourth period at 1 atm and $25^{\circ} \mathrm{C}$: K, Ca, Ga, Ge, As, Se, Br.