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kvv77 [185]
3 years ago
12

Which best describes the importance of the microscope to the development of cell theory? Microscopes color different parts of ce

lls so they can be seen with the naked eye. Cells are too small to see with the naked eye, and a microscope magnifies them. The lenses in a microscope reduce the image of an organism to the size of a cell. Microscopes trap “animalcules” from pond water so they can be studied.
Chemistry
2 answers:
aliya0001 [1]3 years ago
8 0
Cells are too small to see with the naked eye. 

It's pretty straight forward, use the cross-out method. 

1) Microscopes MAGNIFY images, they don't color the cells. In fact, scientists have to use these chemicals to "stain" or color the cells to see them more easily through microscopes. 

2) If the lenses of a microscope reduced the image of an organism to the size of a cell, you'd be seeing a very tiny human through your microscope, instead of actual cells. 

3) Microscopes don't "trap" anything. In fact, scientists use plates or slides under microscopes to contain what they're studying. 

Elza [17]3 years ago
5 0

Answer:The correct answer is B hope this helps

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Which of the following statements describes a difference between a chemical change and a physical change in a substance
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Explanation:

A physical change is one that alters the physical properties of matter (particularly the form and state).

A chemical change is one in which new kind of matter is formed. It is always accompanied by energy changes (evolution or absorption of energy in form of heat or light or both).

Now, the salient differences between physical and chemical changes;

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3 years ago
The last element in any period always has:
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Answer: The correct option is The properties of a noble gas.

Explanation: There are 7 periods in the periodic table.

The last element of each period are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo).

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  • The electronic configuration for all the other elements is ns^2ns^6 ( where, n = 2, 3, 4, 5, 6 and 7 respectively). For all the other gases, the outermost electrons are 8.

All these elements have stable electronic configuration and are not reactive in nature. Hence, they are considered as noble gases.

Therefore, the last element of each period always have the properties of a noble gas.

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You have 5 cars and you double that amount.How much cars do you have.
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