<span>Communication is the sharing of ideas and findings through writing and speaking, because you can process your experiment and collect data all you want, but until you share it with others and compare it with others, than is essentially useless. Open dialogue, open communications is where our ideas and findings really take form and become something worth while and productive to others.</span>
Answer:
I think the answer is coming up with questions based on observations and reasoning
Answer:
The types of energy that are involved in a chemical reaction are :
(A) Activation Energy
(B) Chemical Energy.
- The energy required for a chemical reaction to take place is known as the activation energy. - If the energy is less than the activation energy, the reaction will not take place.
The products would be an alcohol and a salt. so it would be A.
<u>Answer:</u>
<u>For a:</u> The increasing of atomic radius is:
Al < Mg < Na
<u>For b:</u> The pH of the solution of sodium oxide is greater than 7.
<u>Explanation:</u>
Atomic radius is defined as the distance of the nucleus to the outermost shell containing electrons.
It decreases as we move from left to right in a period because electrons get added up in the same shell and effective nuclear charge increased which results in the shrinkage of the atom.
Sodium lies in Period 3, group 1. Its atomic radius is 1.90
Magnesium lies in Period 3, group 2. Its atomic radius is 1.60
Aluminium lies in Period 3, group 3. Its atomic radius is 1.32
The increasing of atomic radius will be:
Al < Mg < Na
The mathematical values proves the result.
There are 3 types of solution based on pH:
- If pH > 7, the solution is basic in nature.
- If pH < 7, the solution is acidic in nature.
- If pH = 7, the solution is neutral in nature.
When a metal reacts with oxygen present in air, it forms basic oxide which simply means when they react with water, they form basic solution.
The chemical equation for the reaction of sodium (metal) with oxygen present in air and reaction with water of the product so formed are as follows:
Sodium forms a basic solution when its oxide reacts with water, therefore the pH of the solution will be greater than 7.