2.1. Properties of Matter http://www.ck12.org
TABLE2.1:(continued)
Substance Color Melting Point (°C) Boiling Point (°C)
Chlorine yellow-green − 101 − 34
Gold yellow 1064 2856
Iron silver 1538 2862
Mercury silvery-white − 117 78
Nitrogen colorless − 210 − 196
Oxygen colorless − 219 − 183
Sodium chloride white 801 1413
Water colorless 0 100- What is the physical state of each of the following substances at room temperature?
a. oxygen
b. iron
c. mercury - What is the name of the physical change that occurs in each of the following instances?
a. Oxygen is cooled from−150°C to−200°C.
b. Iron is cooled from 1600°C to 1500°C.
c. Mercury is heated from−130°C to -100°C. - Which colorless substance is a solid at−50°C?
- Which substance is a liquid at 1000°C?
- Which substance condenses from a gas to a liquid as the temperature is cooled from 20°C to−50°C?
Further Reading / Supplemental Links
- Take a quiz on properties of matter at http://www.chem.tamu.edu/class/majors/tutorialnotefiles/intext.htm.
Points to Consider
A mixture is different from a pure substance because it does not have a uniform and definite composition. Pure
substances include both elements and compounds.
- Can mixtures be further classified into more than one type?
- How are compounds different than elements?