CHEMISTRY MIDDLE SCHOOL

What is matter im confused

Answers

Answer 1
Answer: Matter is pretty much solids, liquids, and gases
Answer 2
Answer: matter is the gavity in which it is also any subject that you could find

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Which block is the densest??

Answers

Pretty sure it is Block A:)

Block A is the densest b/c it has the most amount of molecules for a cube of its size.

Why is wet bandage placed on a forehead of a person suffering from high fever?.

Answers

A wet bandage is put on the forehead of a person suffering from high fever so that the temperature of the person slowly decreases from high to a little bit lower.
A wet bandage helps to lower the temperature of the person suffering from fever.
Hope it helped you....... :)

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

A student is asked to draw an atom of sulfur on a board. the pictures below represents what the student drew. what is wrong with this sulfur atom plzzzz help i need to finish up

Answers

Ur momma eheheheheheh

Which notations represent different isotopes of the element sodium?(1) 32S and 34S (3) Na+ and Nao
(2) S2- and S6+ (4) 22Na and 23Na

Answers

The notations representing the different isotopes of the element sodium are:

4) 22Na and 23Na

The total number of recognized isotopes of sodium is 20. It starts from 18Na upto 37Na with two isomers (22mNa and 24mNa).

23Na is considered as monoisotopic element meaning it has a single stable isotope making it primordial isotope. 23Na is a single isotope since earth was formed. It has a standard atomic mass of 22.989 769 28(2) u.

22Na, a positron-emitting isotope with a long half life = 2.605 years. It is used to create test objects and point sources for PET or positron emission tomography.

A visible streak of light that shows the path of a rocky object which has entered Earth’s atmosphere is

Answers

Answer:

A visible streak of light that shows the path of a rocky object which has entered Earth’s atmosphere is Meteor.

Explanation:

Meteors are the dust and ice originated from the trails of comets. They are the rocks present in the space, the visible bright streak is not from the rock, rather from the glowing hot air because of the hot rock zips from the atmosphere. When large number of the meteoroids strikes the Earth at one time is called meteor shower. It is the open- source isomorphic rocks. These are visible from the one point in the dark sky. These happens due to the masses of cosmic debris known as meteoroids which are coming inside the Earth's atmosphere at extremely great speed on parallel trajectories.    
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