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Nimfa-mama [501]
3 years ago
12

Which of these is an example of a chemical change?

Biology
2 answers:
lawyer [7]3 years ago
7 0

Answer:

The answer is  frying an egg and burning candle.

Explanation:

A chemical change, also known as a chemical reaction, is a process in which one or more substances are altered into one or more new and different substances. In other words, a chemical change is a chemical reaction involving the rearrangement of atoms.

lawyer [7]3 years ago
4 0

The correct options are, frying an egg and burning candle.

Explanation :

Physical change : It is a change in which no new compounds are formed only changes occurs in size or state of substance. In this, there is no changes in the substance or compound.

Chemical change : It is a change in which a new compounds are formed by the chemical reaction. Changes occurs in their chemical composition and properties.

Frying an egg : It is a chemical change because a new substance is form by heating.

Burning a candle : It is chemical change because new substances are formed (carbon dioxide, water and heat) by burning.

Boiling alcohol : It is physical change because only changes in the state.

Melting and ice : It is a physical change because only changes in the state.

Making coffee : It is a physical change because no new substance is formed.

Therefore, frying an egg and burning candle are the example of chemical change.

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He chart shows rate of decay.
mina [271]

The value which is being measured in the columns labeled "Fraction remaining" and "Percentage remaining" is: D. amount of material that has not decayed.

<h3>What is a radioactive decay?</h3>

A radioactive decay can be defined as a radioactive process in which an unstable atomic nucleus undergoes a spontaneous transformation into one or more different atomic nuclei and simultaneously emits radiation, accompanied with a loss of energy.

<h3>The types of radioactive decay.</h3>

In Science, there are three main types of radioactive decay and these include the following:

  • Alpha decay
  • Beta decay
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Based on the information provided in the table (see attachment), we can reasonably infer and logically deduce that the value which is being measured in the columns labeled "Fraction remaining" and "Percentage remaining" is the amount of material that has not decayed.

Read more on radioactive decay here: brainly.com/question/23303931

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7 0
1 year ago
What is the term for a condition whereby small amounts of urine leak from a bladder that is always full as a result of a spinal
grigory [225]

Answer:

Overflow incontinence

Explanation:

Overflow incontinence is due to the leakage of small amounts of urine out of a bladder that is perpetually full. Diabetes and spinal cord injuries may trigger this kind of incontinence.

A spinal cord injury may disrupt interactions among the nerves in the spinal cord that regulates bladder and bowel function and the brain, which leads to incontinence.

This type of inconsistency results from Injury to the spinal cord at T10-L2 causing an overactive bladder.

5 0
3 years ago
What the answer to this question
IrinaVladis [17]
You didnt even gave a question.Sorry but i cant answer.
3 0
3 years ago
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The concept of endosymbiosis (chloroplast &amp; mitochondria) is widely accepted. What kind of relationship is it?
melamori03 [73]

Answer:

mutualistic

Explanation:

The interaction between two organisms in which both the organism gets benefitted from each other is called a mutualistic relationship. This mutualistic relationship is seen in the concept of endosymbiosis.

According to the endosymbiotic theory chloroplast and mitochondria are evolved by engulfment of different bacteria by ancestral cells. Then these bacterial remained in a mutualistic relationship with each other and the ancestral cell evolved into a eukaryotic cell.

So as mitochondria and chloroplast live with a symbiotic relationship with eukaryotic cells, therefore, it is considered as mutualistic relationship.

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3 years ago
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