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larisa86 [58]
4 years ago
14

Changes in appearance...

Chemistry
1 answer:
Serjik [45]4 years ago
3 0
I'm not quite sure but I think if you field the corner or cut it it would physically change it while not creating something new (chemical change).
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B. Another team of scientists must be able to replicate the results of

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Explanation:

Scientists follow due scientific processes in supporting a claim. This process is known as scientific method. A scientific method is a procedural way of investigating an observation. It entails:

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  • detailed experiment
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Through this, when a finding is made, before it can be acceptable by the scientific community, it must be tested through a series of experiments by other scientist. These scientists will also test for the validity of the claim that a new element has been discovered.

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Experiment brainly.com/question/5096428

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3 years ago
Difference between atom and ion <br>plz plz answer ​
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Answer:

Pls mark me brainliest

Explanation:

Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion. When an ion is formed, the number of protons does not change.

Neutral atoms can be turned into positively charged ions by removing one or more electrons. A neutral sodium atom, for example, contains 11 protons and 11 electrons. By removing an electron from this atom we get a positively charged Na+ ion that has a net charge of +1.

Atoms that gain extra electrons become negatively charged. A neutral chlorine atom, for example, contains 17 protons and 17 electrons. By adding one more electron we get a negatively charged Cl- ion with a net charge of -1.

The gain or loss of electrons by an atom to form negative or positive ions has an enormous impact on the chemical and physical properties of the atom. Sodium metal, for example, which consists of neutral sodium atoms, bursts into flame when it comes in contact with water. Neutral chlorine atoms instantly combine to form Cl2 molecules, which are so reactive that entire communities are evacuated when trains carrying chlorine gas derail. Positively charged Na+ and negatively charged Cl- ions are so unreactive that we can safely take them into our bodies whenever we salt our food.

3 0
3 years ago
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vitfil [10]

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i believe it is D because the composition does not change

Explanation:

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because we need to learn new things

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The right answer is Radiant energy is converted to stored chemical energy.

Photosynthesis aims to create energy (in the form of carbohydrate) from the light energy from the sun.

Solar energy is used to oxidize water and reduce carbon dioxide to synthesize organic substances (carbohydrates). This phenomenon occurs in chloroplasts, a plant-specific organelle, at the level of the thylakoid membranes where photosystems I and II and cytochromes are located.

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