Answer:
oxygen, and hydrogen and carbon... those are all things that make up the elements.
Explanation:
You can study article about slope and speed
Answer:
The correct answer would be 3. The number of atoms of each element in the reactants equals the number of atoms of each element in the products.
Explanation:
The law of conservation of matter states that energy cannot be created or destroyed, only transfered. Thus, option 3 is correct.
Answer:
When an electron in an atom has absorbed energy it is said to be in an excited state. An excited atom is unstable and tends to rearrange itself to return to its lowest energy state. When this happens, the electrons lose some or all of the excess energy by emitting light.
Explanation:
i looked it up.
It is a shell structure.
Hope this helps :)