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DENIUS [597]
3 years ago
12

Heating water so it boils is an example of

Chemistry
1 answer:
lions [1.4K]3 years ago
4 0

Answer:

Physical change since evaporation occurs

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The mass of an element is 27 and it's atomic number is 13. Give the composition of the nucleus of it's atom.
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13 protons, 14 neutrons

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Say the dereference between the two is that "Exo" means "outside" and "Endo" means "inside" meaning one pulls heat inside (endothermic) and the other expels heat (exothermic)
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The role of sodium hydroxide in the synthesis of a chalcone is to
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Explanation:

Chemical formula of chalcone is C_{15}H_{12}O and during the preparation of chalcones, a base like sodium hydroxide acts like a catalyst. This catalyst helps in the abstraction of proton from the methyl group acetophenone in order to obtain a negative charge methylene group.

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Endler's Guppies Experiment on Natural Selection
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In conclusion, an experiment about Natural Selection includes mechanisms, explanation, estimation of the frequency of the trait and comparisons.

<h3>What is the scientific method?</h3>

The scientific method is a series of step used to validate evidence and thus formulate theories.

Darwin used the scientific method to draw conclusions about the main mechanism of evolution, i.e., natural selection.

The scientific method involves making a question, providing an explanation of the hypothesis, making observations/experiments (which include experimental and control groups), and drawing conclusions.

The empirical data serve to test a hypothesis (either confirm or reject it) by contrasting its results with predictive outcomes.

The strength of the conclusions can be enhanced by using supporting evidence from other research fields (in this case, for example, the fossil record).

In conclusion, an experiment on Natural Selection includes mechanisms (question), explanation (hypothesis), estimation of the frequency of the trait in the population (prediction) and comparisons (control group).

Learn more about the scientific method here:

brainly.com/question/17216882

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