Answer:
<em>Frame of Reference</em>
The fixed background surrounding an object, assumed to be at rest and in a fixed position.
An acid can be defined as a proton donor.
Both Physical and chemical changes.
Answer:
B.) Oxygen is usually -2
Explanation:
Hydrogen is usually +1.
A pure group 1 element is not always +1.
A monoatomic ion can be a range of numbers. However, it must be a charge other than 0.
Stratovolcanoes, or composite volcanoes, mostly erupt dust, ash, and cinders.
