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katen-ka-za [31]
3 years ago
15

Which of the following is made of atoms? A gravity B light C heat D air

Chemistry
2 answers:
guajiro [1.7K]3 years ago
7 0
It would be A gravity

GrogVix [38]3 years ago
6 0
Your answer would be D. air. Hope this helps!
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Why is the electrical charge of an atom zero or neutral?
kompoz [17]
Because the atom isn't a isotope. The electrons, (negative charge) , and the protons, (positive charge), balance each other out. 
8 0
2 years ago
At the end of the reaction you washed the chemicals into a beaker using water. Why was it OK to use water to do this if Grignard
lesya692 [45]

Answer: water could be used to wash it since the reaction has ended.

Explanation:

There will be no reaction of water with the Grignard reagent since the reaction has ended, as it is well known that water is a universal solvent for washing of glasswares after experiments but if it is during the reaction it will be more advisable to rinse with alcohol to enhance more accuracy during the experiment

7 0
3 years ago
You mix two clear liquids and a colored solid forms at the bottom of the beaker. Do you think this is a chemical change? How can
UkoKoshka [18]
The answer is yes. A chemical change occurred.
Chemical change is defined as the rearrangement or alteration in the of atoms in one or more substance which result in the formation of a new substance.

In the above, you mixed two clear liquids and the result was a new substance which is a colored solid precipitate at the bottom of the beaker.
This means that changes in the atoms of the two clear liquids occurred leading to the formation of this new solid substance.

This means that chemical change has occurred.

Hope this helps :)
7 0
3 years ago
(Q014) Silicates a. are classified on the basis of what kind of metals they contain. b. form through the evaporation of water. c
Leni [432]

Answer: d. have the silicon-oxygen tetrahedron as their structural unit.

Explanation:

Silicates are anions that have both Oxygen and Silicon as the basis of their structure. These two form a tetrahedron type structure that enable them to be useful for a whole lot of things.

Silicates are very abundant on Earth as they comprise around 95% of the Earth's crust as well as the upper mantle which explains why they are mostly found in igneous rocks.

3 0
2 years ago
All of the following pairs of ions are isoelectronic except which one?
mash [69]

Answer: Fe2+ & Mn3+

Explanation:

6 0
3 years ago
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