Answer: Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
Explanation:
<h3><u>Answer;</u></h3>
Coefficient
<h3><u>Explanation;</u></h3>
- Coefficients are the numbers in front of the chemical formulas.
- For example in 3H2O ,the three infront of the water molecule is called the coefficient.
- These numbers give two very important pieces of information about a chemical equation. The coefficients give the number of molecules (or atoms) involved in the reaction.
- Additionally, coefficient give the number of moles of each substance involved in the reaction.
Answer:
There is no air pollution
Explanation:
Unless there is a meltdown.
Nuclear plants generate far more power than coal plants
FUEL is needed....nuclear fuel
Leakage CAN happen.... see info on Three Mile Island or Cchernobryl (Ukraine)
<span>Electromagnetic radiation will be emitted when any
object has a temperature above zero. The
reason behind this is that atoms within any object at a temperature above
absolute zero have energy, and thus is moving.</span>
<span>Atoms are at least partly composed of charged
particles, changed particles must be moving too.</span>
Answer:
A physical change is a change that does not change the chemical properties of the substance and is purely physical.
Explanation:
The appearance of the object of chemical may change but its chemical properties are the same.
For example:
- Ice melting
- Water boiling
- Dissolving salt in water
- Cutting paper
