A substance of unknown composition is heated in an open container. As a result, the mass of the container and its contents
a. decreases.
b. remains the same.
c. increases.
d. Any of these could occur.
[Ques. 2] When an earthquake occurs, the point of initial energy release is called the earthquake's ______________.
Fill in the blank(s) with correct word
[Ques. 3] What person is known as the father of chemistry for his many contributions, including the law of conservation of mass?
a. Boyle
b. Lavoisier
c. Mendeleev
d. Dalton
[Ques. 4] When an earthquake occurs, the location on Earth's surface above the point of initial energy release is called the earthquake's ______________.
Fill in the blank(s) with correct word
[Ques. 5] The force responsible for chemical bonding is
a. nuclear.
b. electromagnetic.
c. none of these.
d. gravitational.
[Ques. 6] After a major earthquake, the rocks may continue to adjust to their new positions, causing additional vibrations called ______________.
Fill in the blank(s) with correct word
[Ques. 7] Name the following compounds.
a. NO2
b. N2O3
c. Zn(NO3)2
d. ICl5
[Ques. 8] Earth's radius is about ______________ mi.
Fill in the blank(s) with correct word
[Ques. 9] Give the formula, including the ionic charge, for each of the following polyatomic ions.
a. hydroxide
b. sulfate
c. ammonium
d. phosphate
[Ques. 10] Large fractures in Earth's surface that are associated with movement of lithospheric plates are called ______________.
Fill in the blank(s) with correct word
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