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Snezhnost [94]
2 years ago
13

Which type of substance is made of only one kind of matter and has definite properties?

Chemistry
1 answer:
aivan3 [116]2 years ago
3 0

A pure chemical substance

Explanation:

A pure substance is any substance made up of only one kind of matter and has definite properties.

Matter is anything that has weight and occupies space

On a broad basis, matter can be categorized as pure or distinct substances and impure substances or mixtures.

Pure substances have the following properties;

  • All parts of a pure substance remains the same throughout i.e homogeneous.
  • Their composition is definite
  • They cannot easily be broken or separated down into simpler substances by physical means.

They have a unique set of chemical properties.

Pure substances are elements and compounds.

learn more:

Heterogeneous mixtures brainly.com/question/1446244

#learnwithBrainly

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which of these is an example of a chemical change A breaking glass B mealting ice on a windshield C burning gasoline D denting a
Nonamiya [84]

Lets do process of elimination!

A. Breaking glass - That is a psychical change because if you break it, it is still glass. It didn't change to another substance.

B. Melting ice on a windshield - During the melting process, there is no chemical change, and therefore, no new substance is created.  

C. Burning gasoline - When gas burns it usually combines with oxygen to give carbon dioxide, water etc.  It is a chemical change.

D. Denting a bumper - The bumper is still a bumper, only thing is it has a dent in it. The properties did not change, meaning no chemical change.

7 0
3 years ago
Read 2 more answers
In which of the following locations are bacteria often found?
djyliett [7]

Answer:  

in the air and soil  

in drinking water

on and inside the human body

Explanation: Hope that helps

7 0
3 years ago
What is the molar mass of CaSO4 ?
defon
<span>136.14 g/mol    </span><span><span>Calcium sulfate, Molar mass</span></span>
3 0
2 years ago
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Consider the nuclear equation below. Superscript 124 subscript 56 B a right arrow superscript 124 subscript 55 upper C s plus qu
nadezda [96]

Superscript o subscript negative 1 e.

Explanation:

The nuclear reactions is of 2 types, one is nuclear fusion and the other one is nuclear fission.

Nuclear fusion is nothing but the combining of 2 nuclei with an emission of energy along with an electron, proton or beta particle.

Nuclear fission is the break down of a nucleus into 2 or more nuclei along with an electron, proton or beta particle.

And the reaction is,

₅₆B¹²⁴  ₅₅C¹²⁴ +  ₋₁e⁰

So the blank was filled by means of a beta particle.

6 0
3 years ago
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Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution
tatiyna

Answer : Carbon tetrachloride, k_f=29.9^oC/m will show the greatest freezing point lowering.

Explanation :

For non-electrolyte solution, the formula used for lowering in freezing point is,

\Delta T_f=k_f\times m

where,

\Delta T_f = lowering in freezing point

k_f = molal depression constant

m = molality

As per question, the molality is same for all the non-electrolyte solution. So, the lowering in freezing point is depend on the k_f only.

That means the higher the value of k_f, the higher will be the freezing point lowering.

From the given non-electrolyte solutions, the value of k_f of carbon tetrachloride is higher than the other solutions.

Therefore, Carbon tetrachloride, k_f=29.9^oC/m will show the greatest freezing point lowering.

4 0
3 years ago
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