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nikitadnepr [17]
3 years ago
5

What are 3 physical changes in a paper

Chemistry
2 answers:
kaheart [24]3 years ago
6 0

Answer:

You can rip it, cut out a shape, paint or color on it, or fold it in different ways. The paper might look different, but it is still paper.

Explanation:

bekas [8.4K]3 years ago
4 0
How can you make physical changes to a piece of paper? You can rip it, cut out a shape, paint or color on it, or fold it in different ways. The paper might look different, but it is still paper.
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If a neutral atom has 22 protons within its nucleus, how many electrons will it have orbiting the nucleus?
astraxan [27]

Answer:

If a neutral atom has 22 protons inside its nucleus, it will have 22 electrons orbiting the nucleus.

Explanation:

An atom is the smallest amount of matter that undergoes chemical changes and is made up mainly of subatomic particles: electrons, protons and neutrons. The atomic nucleus is made up of protons, with a positive electric charge, and neutrons, which have no charge, while electrons, with a negative electric charge, revolve around the nucleus.

A neutral atom is one that lacks an electrical charge due to a trade-off between the number of its protons and electrons. In other words, although it has an electric charge, it is balanced between protons, electrons and neutrons. So in a neutral atom, the number of electrons equals the number of protons because the negative charge of the electrons is offset by the positive charge of the protons.

<u><em>If a neutral atom has 22 protons inside its nucleus, it will have 22 electrons orbiting the nucleus.</em></u>

3 0
3 years ago
6.201cm+7.4cm+0.68 cm+12.0cm
zimovet [89]
If you want the answer is centimeters is it going to be:
26.281 cm
If it make it easier for you to solve add 6.201 and 7.4 which will equal 13.601. Then add .68 to 13.601 which equals 14.281. Last add 12 to 14.281 which equals 26.281.

Hope this helps.

8 0
3 years ago
When potassium iodide liquid is poured into lead nitrate solution (both clear solutions), a bright yellow solid, lead iodide, fo
anyanavicka [17]

Answer:

A precipitate forms; the colour changes.

Step-by-step explanation:

The formation of a precipitate a colour change are always signs that a chemical reaction has occurred.

A, B, C, and D are <em>wrong.</em> They are signs of a reaction, but you did not observe them here.

6 0
4 years ago
Read 2 more answers
86.94 meters to centimeters 8,694
ivanzaharov [21]

True it is 8,694 cm

Hope it helps!

5 0
3 years ago
Please solve this question
sammy [17]

Answer:

b) it gets accumulated in the respiratory system which then halts or slows down the supply of oxygen to the brain hence leading to death

8 0
3 years ago
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