CHEMISTRY MIDDLE SCHOOL

1. what type of ion is chlorine ?2. what type of ion is oxygen?
3. what type of ion is
magnesium?
4. what type of ion is silicone?
5. what type of ion is carbonate?
6. what type of ion is nitrate?​

Answers

Answer 1
Answer:

Answer:

1. Univalent negative ion (Cl-)

2. Divalent negative ion (O2-)

3. Divalent positive ion (Mg2+)

4. Divalent negative ion (S2-)

5. Divalent negative ion (CO3)^2-

6. Univalent negative ion (NO3) ^-
Answer 2
Answer: 1 . It is formed when the element chlorine (a halogen) gains an electron or when a compound such as hydrogen chloride is dissolved in water or other polar solvents.

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What is the Law of Conservation of Mass and Energy? (Explain)

Answers

Answer:

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

Explanation:

How does paper chromatography work

Answers

Paper chromatography is an analytical method that is use to separate color substances in a piece of paper and can be used in a secondary and primary colored ink experimentation. The separation of ink is due to the solvent that is poured into the paper. Usually the solvent is used an Amino Acid

Which best explains why metal cooking utensils often have plastic coating on the handles

Answers

Metal solids contain a positively-charged cation surrounded by a "sea" of delocalised, negatively-charged electrons.

The electrons are able to move freely, and hence transfer kinetic energy throughout the implement at a much quicker rate than non-metals.

Plastic is made of non-metals (Mostly carbon and hydrogen) and therefore is a poor thermal conductor.

Therefore, by coating the metal utensil in plastic, the rate of heat energy transfer to the person in contact's hand is decreased.

Answer:

Plastic reduces the transfer of thermal energy to hands holding the utensils.

Explanation:

Three coyotes per square kilometer is an example of population

Answers

This should be an example of population density which is how many individuals there are per unit of area.

I hope this helps.  Let me know if you were looking for a different answer.

When you mix the primary colors of light, you produce what color?

Answers

When you mix all the colors you get white, or the regular light you see every day.
If you mix all of the primary colors, you get White light

What method of forecasting uses averages to predict future weather?O
A. Persistence method
B. Climatology method
O
C. Analog method
O
D. Trends method

Answers

The climatology method of forecasting uses averages to predict future weather.

Answer: B

Explanation

The satellites and advanced technologies have helped meteorologists to forecast accurately.

There are four types of forecasting methods prevailing now.

They are climatology method, persistence method, analog method and trends method.

The persistence and trends method uses the previous day forecast and compare with today's condition to forecast about future.

The analog method is a complex method where the forecasting is done by comparing present weather condition with a similar condition occurred in the past to predict for future.

The climatology is the simplest method which uses average of weather conditions observed in the previous days to get accurate forecast for future.

Climatology method is the right answer.
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