CHEMISTRY HIGH SCHOOL

The three components essential for a fire are:a. Oxygen, fuel, ignition source.
b. Oxygen, fuel, primer.
c. Oxygen, fuel, oxygen enriched environment.
d. Oxygen, fuel, a liquid.

Answers

Answer 1
Answer:

Hey there


The answer should be : Oxygen, fuel , heat


I hope that's help !

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If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution wasa. saturated.
b. unsaturated.
c. supersaturated.
d. an emulsion.

Answers

Supersaturated so C trust me

Answer:

I don't think it is. I think it would be an emulsion.

Many scientists contributed to the current model of atoms. Which of the following offers a hypothesis on how people’s backgrounds and interests influence their work?A person with more activities and interest is more creative and intelligent.
A person’s background and interests can give him a unique perspective in his research.
If a person has an outside influence on his work, it is more credible to the general public.
A person’s involvement in arts and literature will help them notice more details in their research.

Answers

The statement that offers a hypothesis on how people’s backgrounds and interests influence their work is that of a person’s background and interests can give him a unique perspective in his research. The more he has background on the specific interest, then it is easier for him to do work.

Answer:

Option B

Explanation:

A person’s background and interests can give him a unique perspective in his research is the correct answer, I got it right on the test.

It is possible for a particular element to have various number of neutrons

Answers

Yes, it is possible for a particular element to have various number of neutrons, and that would make it have an isotope. 

who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

Answers

Dmitri Mendeleev arranged the elements

Final answer:

Dimitri Mendeleev arranged the elements according to atomic mass and predicted the properties of missing elements. His table, known as the periodic table, was later validated and is now widely used in chemistry. The modern version is organized by atomic number and period.

Explanation:

The arrangement of elements according to atomic mass and the prediction of properties of missing elements was conducted by Dimitri Mendeleev in Russia in 1869. Together with Lothar Meyer from Germany, they recognized the periodic relationship among the known elements at that time. However, Mendeleev went a step further to use his table to predict the existence of elements that had properties similar to known ones such as aluminum and silicon.

Mendeleev's predictions were later validated with the discoveries of gallium in 1875 and germanium in 1886. These discoveries lent great credibility to Mendeleev's work. Today, the periodic table is arranged according to atomic number, following the periodic law. This law states that the properties of elements are periodic functions of their atomic numbers.

Importantly, the periodic table is far more than just an arrangement of elements. It's a vital tool in chemistry that helps predict the chemical behavior of elements and compounds.

Learn more about Periodic Table here:

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It's important to match your exercise shoes with the type of exercise in which you will be participating.

Answers

It's important to match your exercise shoes with the type of exercise in which you will be participating. This is to avoid muscle cramps and strains when you are moving. It also provides room for movement for your feet as it will move around a lot.

Answer:

true

Explanation:

Which of the following materials is damaged by acid rain

Answers

What are the options?
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