All categories

3 years ago

What is the difference between physical and chemical change?

Chemistry

2 answers:

vlada-n [284]3 years ago

8 0

Answer: Physical change doesn't form a new substance and chemical change does

Gekata [30.6K]3 years ago

4 0

Answer:

The difference between a physical reaction and a chemical reaction is composition.

Explanation:

In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.

You might be interested in

What is the main function of the circulatory system?

likoan [24]

B- is the answer

Hope this helps

Have a nice day~

4 0

3 years ago

Read 2 more answers

4. The picture shows a full moon.

Anuta_ua [19.1K]

Answer:

A full moon occurs when the Moon appears as a complete circle in the sky.

Explanation:

- We see it as a full orb because the whole of the side of the Moon facing the Earth is lit up by the Sun's rays.

- The moon shows no visible light of its own, so we only see the parts of the moon that are lit up by other objects.

6 0

2 years ago

Read 2 more answers

Which is most likely why many scientists reject the cold fusion theory?

mina [271]

The original results have not been replicated consistently and reliably.

8 0

3 years ago

Read 2 more answers

I need the answer to 452 of arogon

yaroslaw [1]

I'm confused... is there more info?

3 0

3 years ago

What are the hydronium and hydroxide ion concentrations in a solution whose ph is 6.52?

erica [24]

A solution with a pH of 6.52 has a hydronium ion concentration of 3.02x10-7 mol/L and a hydroxide ion concentration of 3.31x10-8 mol/L.

The hydronium ion concentration of a solution can be calculated from pH by using $10^{-pH}$ . For a pH of 6.52, hydronium ion concentration is 3.02x10-7 mol/L.

The concentration of hydroxide ions can be determined by identifying the value of pOH. The sum of pOH and pH is equal to 14, which is based on the negative logarithm of the ion-product constant of water. At a pH of 6.52, pOH is equal to 7.48.

The relationship between pOH and hydroxide ion concentration is the same as the relationship between pH and hydronium ion concentration. With this, the hydroxide ion concentration at pOH of 7.48 is $10^{-7.48}$ or 3.31x10-8 mol/L.

For more information regarding pH and pOH, please refer to the link brainly.com/question/13557815.

#SPJ4

3 0

1 year ago