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Lapatulllka [165]
3 years ago
15

Describe the characteristics that identify a sample of matter as a substance.

Chemistry
2 answers:
madreJ [45]3 years ago
7 0

Answer:

1.Extensive property

2.Intensive property

Explanation:

Matter: It can be anything which occupy space  and has mass.

Example:Wood , stone etc.

Substance:It is a matter .If matter has specific composition and chemical properties .Then , the matter is called substance.

For example: elements such as mercury, sodium etc.

All substance can be matter but all  matter can not be substance.

Substance can be identified by two physical properties:

1.Extensive property

2.Intensive property

1.Extensive property: That property which depend on the amount of substance such as mass, length , volume etc.

Intensive property: That property which does not depend on the amount of substance such as density, boiling point, melting point etc.

By observing these properties we can identify a sample of matter as  substance.

tankabanditka [31]3 years ago
4 0

Answer:

matter is anything that has mass and takes up space so it could be heavy light small or big

Explanation:

whatever describes mass and space

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sukhopar [10]
There is two different types but i’ll just do both meanings just incase.

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Graham's Law of Effusion: the rate of effusion of a gas is inversely proportional to the square root of the density of the gas.

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7 0
3 years ago
The pka of hf is 3.2 determine the pkb of hf?
Julli [10]

Well, first we must remember that

pK_{a}+pK_{b}=14

This is because

K_{a}*K_{b}=10^{-14}

-log(K_{a}*K_{b})=-log(10^{-14})\\-logK_{a}+-logK_{b}=-log(10^{-14})\\pK_{a}+pK_{b}=14

So then

pK_{b}=14-pK_{a}=14-3.2=1.8

7 0
3 years ago
Read 2 more answers
CH3COOH(aq) + NaOH(aq) → H2O(l) + NaCH3COO(aq)
ser-zykov [4K]
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3 0
3 years ago
Na2SO3" represents sodium sulfite. What does the 4 mean in the formula 4Na2SO3? There are four atoms of sodium. There are four a
coldgirl [10]

The designation "4" before Na2SO3 simply means that there are four molecules of sodium sulfite.

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The "The World on Turtle's Back" is a legend creation story. According to this story, the world was created on a giant turtle back. The folktale is common among the  Iroquois Native Americans.

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7 0
2 years ago
Two 10g blocks, one of copper and one of iron, were heated from 300 K to 400K (a temperature difference of 100 K).
vova2212 [387]

Energy absorbed by Iron block E (iron) = 460.5 J

Energy absorbed by Copper block E (Copper) = 376.8 J

<u>Explanation:</u>

To find the heat absorbed, we can use the formula as,

q = m c ΔT

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c = specific heat capacity

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c for copper = 376.8 J/kg K

Plugin the values in the above equation, we will get,

q (iron) = 0.01 kg × 460.5 J/kg K × 100 K

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3 0
3 years ago
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