Answer:
D. Vibrating around fixed positions
Explanation:
It's right on edge
Answer:
Compound
Explanation:
We want to know if it's a compound or a mixture.
An example of a mixture is salt water: you can heat it hot enough to boil off the water, leaving only the salt. This is a physical change, which is how you know it's a mixture.
Something like gold is a compound: if you heat it, or hit it, you'll still only have gold. You can only break it down by chemical means, which is how you know it's a compound.
Answer:
low pressure
Explanation:
it will draw in warm water and air.
The flame goes an Orange-Red colour.
Answer: pH = 3.15
Explanation: Solved in the attached picture.
