CHEMISTRY MIDDLE SCHOOL

Why did Dalton think it was important to use his system of symbols for the chemical elements?

Answers

Answer 1
Answer:

Explanation:

to remind people that atoms were

Answer 2
Answer:

Answer:

to remind people that atoms were

Explanation:

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Is an elements reactivity determined by the number of protons found in an atom of the element

Answers

nope. the electrons are what determine the reactivity

I need somebody to help me with my homework pls i dont get it .

Answers

26. B
27. D
28. C
Hope this helped ☺️

What are the number of molecules in 2.56 moles of water?

Answers

Answer:

1.54x10^24

Explanation:

To convert moles to molecules, multiply the number of moles by Avagadro's number (6.02x10^23).

2.56mol × 6.02x10^23 = 1.54x10^24

Which generally occurs as temperature increases?

Answers

Solubility increases.

Answer:

solubility increases

Explanation:

For example with gases dissolved in liquids, a rise in temp would decrease solubility. There are even some solid in liquid soln where increasing temps decreases solubility.

Sierra did 500 J of work to move her couch. If she exerts 250 N of force on the couch, how far did she move it? (Work: W = Fd) 0.5 m 2 m 250 m 750 m'

Answers

Answer:

The answer is 2 m.

Explanation:

THE Answer IS B 2m

Explanation:

As the temperature of a gas decreases, what change occurs in the amount of kinetic energy?

Answers

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed.
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True or False: the force of attraction that holds two atoms together is called a chemical bond
How many atoms in 54.0 g of aluminum
Can someone please help me in number 1 and 2 thankss