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Zanzabum
3 years ago
7

What is physical and chemical change ?

Chemistry
1 answer:
galben [10]3 years ago
4 0

Answer:

Physical change is there is a difference in appearance, smell, etc.

Chemical change is there is change in the composition or the rearrangement of the atoms of one or more substances.

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How much time does sugar takes to dissolve in : 1: ice cold water 2: room temperature 3: boiling point
maxonik [38]

Answer:

room temperature

Explanation:

what i think this is the answer do u know ans

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The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abb
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Answer:

\boxed{\text{254 g}}

Explanation:

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3 years ago
"What volume of" a 0.300 M BaF2 "solution is needed to prepare" 240.0 mL of a 0.100 M F- solution
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3 years ago
Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbi
JulijaS [17]

Answer:

Pb is the substance that experiments the greatest temperature change.

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The specific heat capacity refers to the amount of heat energy required to raise in 1 degree the temperature of 1 gram of substance. The highest the heat capacity, the more energy it would be required. These variables are related through the equation:

Q = c . m . ΔT

where,

Q is the amount of heat energy provided (J)

c is the specific heat capacity (J/g.°C)

m is the mass of the substance

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Since the question is about the change in temperature, we can rearrange the equation like this:

\Delta T = \frac{Q}{c.m}

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\Delta T = \frac{q}{c.m} = \frac{100.0 J}{0.128 J/g.C . 10.0g } = 78.1

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True or false. adding more neutrons to a neutrally charged atom will not change the charge
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The statement is true.
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