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ASHA 777 [7]
3 years ago
8

Disagree or agree n provide evidence !!! pls n thank you​

Chemistry
1 answer:
stealth61 [152]3 years ago
5 0

Answer: True

Explanation: There are many different types of reactions that can occur during a chemical reaction, a substance dissolving is one of them! often you will notice the following: fizzling, bubbles, color change, odor being produced, smoke. etc.

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Pls help me on this I have 5 minutes left to submit
pantera1 [17]

#1

Heterogenous mixture mean unsimilar substances .

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  • propane.

#2

An element is a substance made of only one type of atoms

  • Example-Al,S
7 0
2 years ago
Read 2 more answers
When water evaporates, what happens to the molecules that make up the liquid water?
Rama09 [41]

Answer:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.

Explanation:

7 0
3 years ago
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In order for an atom to be neutral (i.e. have no charge), it must have the same number of ______ as it has protons. a. neutrons
Marina CMI [18]

Answer : The correct option is, (b) There is a same number of electrons.

Explanation :

For the neutral atom, the number of protons and electrons are equal. But, they are unequal when the atoms present in the form of ions or the atom has some charges.

When an unequal number of electrons and protons then it leads to the formation of ionic species.

Ion : An ion is formed when an atom looses or gains electron.

When an atom looses electrons, it will form a positive ion known as cation.

When an atom gains electrons, it will form a negative ion known as anion.

For example : The neutral atom Mg has equal number of protons and electrons i.e 12 but Mg^{2+} ion has unequal number of protons and electrons that means it has 12 number of protons and 10 number of electrons.

Hence, the correct option is, (B) electrons

5 0
3 years ago
What two factors determine the thermal energy in a substance
Eduardwww [97]
The answer to that is mass and chemical
7 0
3 years ago
Protons and neutrons are found in the nucleus. these two types of charges are referred to collectively as _____
solmaris [256]

Answer:

Nucleon

Explanation:

4 0
3 years ago
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