Physics Middle School

Matter is all around us and is made of atoms. How are atoms of different elements different from each other? How do these differences relate to their properties? HEYALPPP

Answers

Answer 1
Normally, the number of electrons is equal to the number of protons, which makes atoms electrically neutral. The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number.

Related Questions

What has to happen for these atoms/molecules to change from one state of matter to another? *view attachment*

Answers

Answer:Thermal energy is added or transferred

Explanation:

The answer is the third option

What converts organic remains into fossil fuels? 1.chemical reaction 2water 3.heat and pressure

Answers

Answer:

Heat and pressure

Explanation:

Pressure and heat I took the quiz

In the periodic table, the most reactive metals are found a. in Group 1, the first column on the left. b. in Period 1, the first row across the top. c. in Groups 13 through 16 in the center. d. in Periods 6 and 7 at the bottom.

Answers

Answer:

Group 1

Explanation:

The alkali metals are the most reactive metals found on the periodic table

In a periodic table, the most reactive metals are found in Group 1, the first column on the left. (option a)

The most reactive metals are found in Group 1, which is the first column on the left side of the periodic table. Group 1 is also known as the alkali metals. These metals include elements like lithium (Li), sodium (Na), and potassium (K). Alkali metals are highly reactive because they have only one electron in their outermost energy level.

This means they are eager to lose that electron and achieve a stable electron configuration, which makes them more likely to engage in chemical reactions.

As we move down Group 1, the reactivity increases because the outermost electron is farther from the positively charged nucleus, making it easier to lose.

Hence the correct option is (a).

To know more about periodic table here

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A parking lot is going to be 40 m wide and 100 m long. Which dimensions
could be used for a scale model of the lot?
A. 10 cm x 25 cm
B. 100 cm x 300 m
O C. 75 in x 225 cm
D. 25 cm x 75 cm


Answers

Answer: A

Explanation: You need to find the dimensions of the scale model of the lot that can be multiplied equally to get the original length. Basically 40 m and 100 m need to be divided by the same number to make the scale model evenly, and right off the bat you see that 10 and 25 could be multiplied by 4 and equal the original numbers. Hope this helps! Also sorry if it was kinda hard to understand lol, when i explain things its hard to get out of my own head ;P
answer is A. 10cm by 25 cm

The forces exerted on an object are shown. A box has an arrow pointing right labeled F shown and an arrow pointing left labeled 8 N. If the object moves left, which statement is correct about force F?

Answers

Answer:

force F is weaker than force N

Answer:

its less then 8 N :)

What are fossil fuels composed of? 1.Carbon 2.Nitrogen 3.Oxygen

Answers

Answer:

fossil fuels are composed of Carbon.

Answer: Carbon

Explanation:

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