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anyanavicka [17]
2 years ago
14

Which is not true of atoms?

Chemistry
1 answer:
kotykmax [81]2 years ago
6 0

Answer:

A. They are composed of molecules

Explanation:

Just got it right on edge 2020

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You witnessed a slide breaking while someone is using a microscope.The silde was not dropped.You are tasked with finding out why
Evgesh-ka [11]

Answer:

See the answer below

Explanation:

<em>The slide could have broken due to the ramming of the objective (especially the high power objectives) into the slide on the stage of the microscope while trying to bring the object on the slide into focus.</em>

It is recommended to <u>start with the lowest objective while trying to focus a slide</u>. Thereafter, the next higher objective can be switched to and the image brought into focus once again. This can be repeated until the desired magnification of the image is reached.

However, <u>at higher objective powers, the coarse adjustment knob should be avoided </u>to avoid the objectives touching/breaking the slide. Instead, the fine adjustment knob should be used.

Hence, the breaking of the slide in the illustration could have been due to the use of the coarse adjustment knob at higher objective powers and the ramming of the objective into the slide.

3 0
3 years ago
Please answer
timofeeve [1]

Answer:

1) petroleum, mixture, not found on periodic table

2) hydrogen and helium, mixture, contains "and"

3) iron sulphide, compound, ends with "ide"

4) carbon dioxide, compound, ends with "ide"

5) salt water, mixture, not found on periodic table

6) milk and sugar, mixture, contains "and"

7) silver nitrate, compound, ends with "ate"

8) sodium carbonate, compound, ends with "ate"

9) carbon electrode, mixture, not found on periodic table

10) astatine, element, found on periodic table

11) argon, element, found on periodic table

12) oxidane, compound, contains "ane"

13) iron and sulphur, mixture, contains "and"

14) methane, compound, contains "ane"

Explanation:

5 0
2 years ago
What's difference between sigma and pi bond??
Aleksandr-060686 [28]
A triple bond<span> is one </span>sigma<span> and two </span>pi bonds<span>. A </span>sigma bond<span> is your basic head-on covalent </span>bond<span>, with the </span>bond<span> in line with the </span>bonding<span> orbitals. You can only ever have one </span>sigma bond between<span> any two atoms. A </span>pi bond<span> is a covalent </span>bond between<span> orbitals perpendicular to the </span>bond<span> direction, usually p-orbitals (nevers)</span>
7 0
3 years ago
Lysosomes are important for _____.
kirza4 [7]
Digestion would be correct. Hope this helps
8 0
3 years ago
Read 2 more answers
This is a group on elements with properties of both a metal and a nonmetal. Example: silicon, antimony, also known as a metalloi
tiny-mole [99]
These are metalloids. :)
8 0
3 years ago
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