A combination of sand, salt, and water is an example of a __________.
heterogeneous mixture
An element cannot __________.
be separated into other substances by chemical means
Which of the following are chemical processes?
1. rusting of a nail
2. freezing of water
3. decomposition of water into hydrogen and oxygen gases
4. compression of oxygen gas
rusting of a nail & decomposition of water into hydrogen and oxygen gases
Which one of the following is the highest temperature?
220�F {Convesion
Which one of the following is true about the liter?
It is equivalent to a cubic decimeter.
Express the temperature, 422.35 K, in degrees Celsius.
149.20 �C {C=K-273.15}