CHEMISTRY MIDDLE SCHOOL

What are some facts about ionic bonding?
I need some information for my poster

Answers

Answer 1
Answer:  - they are always formed by a cation and a anion 

- they transfer electrons rather than shared 

- all are binary ionic compounds are solids 

- they are neutral i.e. no charge

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Easy Question! Chemistry - Please help! I give thanks - It's the picture - Question 2

Answers

Volume of a cylinder = \pi r^(2) h
r = (D)/(2)
  = (8.4cm)/(2)
  = 4.2cm

h = 14.5cm
\pi = 3.14

V= (3.14) * ((4.2cm)^(2))*  14.5cm
  = 803.1 cm^(3)

State one reason that cells are small!

Answers

cells are so small so the surface area and volume of them can be proportional to each other. This helps with the efficiency of the cell's absorption and waste expulsion processes. 

What are the words that describe how matter changes state

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"Phase" describes a physical state of matter. The key word to notice is physical. Things only move from one phase to another by physical means. If energy is added (like increasing the temperature) or if energy is taken away (like freezing something), you have created a physical change. 

What is the volume, to the nearest whole cubic inch, of a cylinder with a height of 10 inches and a radius of 8 inches? Use Pi = 3.14 and round your answer to the whole number.cubic inches

Answers

Answer:

v=2010 inches^3

Explanation:

The volume of a cylinder can be found using:

v=\pi r^2h

We know the height is 10, the radius is 8, and we can substitute 3.14 in for pi

v=3.14(8^2)(10)

Solve the exponent first

v=3.14(64)(10)

v=3.14(640)

v=2009.6

To the nearest whole number:

v=2010 inches^3

Explain how following a fitness plan can help you meet a goal

Answers

because if you follow a fitness plan you can get done a lot of stuff that you can't without a plan so like you make a plan of what you are going to do instead of just doing random fitness stuff
If u follow a fitness plan it helps becuase it helps u be healthy and loose weight and junck food has bad stuff for ur body

How does a buffer work

Answers

A buffer works by bonding with the added H+ or OH- in solution

A buffer is simply a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffers work by reacting with any added acid or base to control the pH.

Hope this helps
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