CHEMISTRY MIDDLE SCHOOL

Which of the following is an example of a model?A. The solar system
B. A globe
C . A planet
D. A padlock

Answers

Answer 1
Answer: The answer is B a globe
Hope this helped
Answer 2
Answer: B: a globe
You can see the fratures of the planet & the names as well all depending WHICH globe you get

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what happens when you mix muriatic acid and phenolphthalein indicator together

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Answers

When you mix muriatic acid and phenolphthalein indicator together, the solution is colorless. Phenolphthalein indicator will turn pink to basic compounds only not acidic solutions.

How many double bonds are in an alkane?

Answers

None
Alkanes only have single bonds

Final answer:

Alkanes are hydrocarbons with only single bonds between the carbon atoms, therefore, they do not contain any double bonds.

Explanation:

In chemistry, an alkane is a type of hydrocarbon where all of the carbon-carbon bonds are single bonds, meaning they share just one pair of electrons. Double bonds share two pairs of electrons and are typically found in alkenes, a different type of hydrocarbon. Therefore, an alkane does not have any double bonds.

Learn more about Alkanes here:

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Iron is produced in a blast furnace.Explain why most of the iron produced in a blast furnace is converted into steels.

Answers

It has nothing related to science . It is just dependent on the demand. If the demand for steel is high(as it is high)then most of it is used in making steel . Steel has many advantages thus it has a high demand.
I believe raw iron corrodes easily hence most of the iron is converted into steel , so as to increase its demand , life span and utility,

What is polygenic inheritance

Answers

Polygenetic Inheritance is where many genes can determine one trait, hence the prefix poly.

Answer:

Polygenic Inheritance is where one trait (for example, eye color) is determined by multiple genes (two or more).

This typically happens when there is a wide variety of this trait (e.g. height, eye color, hair color, skin color, etc.).

1. What elements are carbohydrates generally composed of?

Answers

The correct answer is  hydrogen, and oxygen. 
the answer is hydrogen,oxygen,and carbon

Which has a larger atomic radius Be or Ba

Answers

Ba has the larger atomic radius
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In which of these situations would light slow down?A. from plastic to air B. from ice to water C. from a vacuum to air D. from glass to air
5)ยป A change inmeans that a chemical reaction has occurred.
Which of the following could not happen as a pot of water boiled on the stove?A. PARTICLE VIBRATION INCREASEDB.PARTICLE VIBRATION DECREASEDC.PARTICLES MOVED FARTHER APARTD.PARTICLES MOVED RANDOMLY