CHEMISTRY MIDDLE SCHOOL

If u pour flour and sugar in one bowl is the substance a mixture atom or element

Answers

Answer 1
Answer: im pretty sure it's element

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A car uses stored chemical energy in gasoline to move. The engine changes chemical energy into heat and ____ energy to power the car.light
sound
wind
mechanical

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Mechanical energy. Otherwise potential into kinetic would work also.

mechanical energy is your answer :)

What is it called when you squeeze gas into a smaller space

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the answer to your question is compress
Ofcourse the gas will copress

What is water displacement?????

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When you put an object in water it moved the water to make room for itself. It is used to measure
Water displacement was discovered by the Greek thinker Archimedes in the 3rd century BC. He worked out that if you put an object in water, the amount of water displaced (thrown out) is equal to the volume of that object. By measuring the overflow of water, you can work out the volume of the object (it only really works if the object is non-porous/ can't soak up the water. In fluid mechanics, displacement occurs when an object is immersed in a fluid, pushing it out of the way and taking its place. The volume of the fluid is displaced can then be measured. 

Chemical formula for iron (l) selenide

Answers

Answer:

Iron can not form iron(i) selenide however it can form iron(ii) selenide.

Explanation:

The possible oxidation states of iron are +2 and +3.

Iron can form iron (ii) selenide.

The formula of iron (ii) selenide is FeSe.

In iron (ii) selenide the oxidation state of iron is +2.

The ratio of both atoms are 1:1.

Its molecular weight is 134.82 g/mol.

It is toxic compound.

Its melting point is 965°C.

Its density is 4.72 g/cm³.

Iron can also form iron (iii) selenide.

The formula of iron (iii) selenide is Fe₂Se₃.

In  iron (iii) selenide the oxidation state of iron is +3.

The ration of both atoms are 2:3.

It also known as ferric selenide.

Its molecular weight is 348.57 g/mol.

Accretion is a process recognized as part of the development of .

Answers

Answer:

Most astronomical objects, such as galaxies, stars, and planets

Explanation:

The periodic table is organized left to right by __________.Metals, nonmetals, metalloids

Metals, metalloids, nonmetals

Metalloids, nonmetals, metals

Nonmetals, metalloids, metals

Answers

Answer:

Metals, metalloids, non-metals

Explanation:

:)

The answer will be B. Metals, metaloides, nonmetals
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