CHEMISTRY HIGH SCHOOL

Repulsion is a force or interaction among the atoms in a molecule in which the atoms attract one another. a. True
b. False

Answers

Answer 1
Answer: Repulsion is a force or interaction among the atoms in a molecule in which the atoms REPEL one another. By the word itself repulsion, meaning to repel, it automatically bans the idea of ATTRACTION. Therefore, the statement above is FALSE. The answer to this question is "B. False". 

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Is freezing water a physical or chemical change

Answers

Freezing water is a physical change, because it just changes the form of water, no it's chemical structure.

Hey guy I have presentation tomorrow on sodium . Can u give me ideas how to present it. So that students feel joy and easily understand

Answers

Answer:

first you could say did you know that you 3% of sodium in sprit but the good thing is that sodium wont make you gain any pounds if it weren't for sodium all are food wouldn't be preserved we would be eating unpreserved food witch could really hurt your body.

Explanation:

hope it  helps

Describe how rows and columns in the modern periodic table are organized

Answers

They are organized by their atomic number 

Which of the following substance is not an acid? 1. Substance A is tested and found to have a pH of 3. 2. Substance B, a common food, tastes sour. 3. Substance C causes metals to corrode. 4. Substance D feels slippery in solution.

Answers

Answer

  • The correct option is 4. feel slippery.

Explanation:

Acid and base have different characteristic which identify either it is acid or base.

1. Substance A is tested and found to have a pH of 3.

This option is for acid because acid have pH in the range of 0-6

2. Substance B, a common food, tastes sour?

This option is also for acid because acid have sour taste.

3. Substance C causes metals to corrode.

This option is also for acid because acid can cause corrosion

4. Substance D feels slippery in solution

This option is not for acid but it is for base because bases have the properties of slippery.
Substance d as it's the only one with none acid traits

How many moles of oxygen atoms are present in 5 moles of Mg3(PO4)2

Answers

How many moles of oxygen atoms are present in 5 moles of Mg3(PO4)2

All you have to do is to create a ratio between the molecule and the oxygen atom.

5 moles of Mg3(PO4)2 (4x2 moles O/1 mole Mg3(PO4)2) = 40 moles of oxygen

Compare and contrast an electric generator and a battery??

Answers

Both generators and batteries both convert a form of energy into electrical energy. In a battery, a chemical reaction takes place which converts chemical energy into electrical energy. In a generator however, many times mechanical energy is being converted into electrical energy. A process called electromagnetic induction can take place in some generator which is where an electromagnet is used to help conduct electricity. hope this helped!!! 
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