B) a molecule
A molecule is formed when two atoms join together with a covalent bond.
Answer:
it increases and is perpendicular to the motion of the wave.
Answer:
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Explanation:
Answer:
False
Explanation:
It is not true that this is an example of a chemical reaction. This is a typical example of physical reaction.
Most physical changes are often phase changes.
- A phase change is a change in the physical state of a body.
- In this change, it is from solid to liquid.
- Now new substances are formed.
- When substances are changed from one form to another, it is a physical change.
In a chemical change, a new substance is formed at the end of the process.
Answer: B. High precision
Explanation:
