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Answer: 1000x
Explanation:
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A magnesium atom is a neutral atom where the number of protons and electrons are the same. A magnesium ion has a positve 2 charge since it will lose two of its electrons when it undergoes ionic bonding. Since it's the same element it will still have the same amount of 12 protons. For isotopes of magnesium, they will have differing amounts of neutrons and thus a difference in the mass number since neutrons have a mass of about 1
When a substance melts it has changed from a solid to a liquid state while when a substance is set on fire is changes from liquid to gaseous state as it boils.
<h3>What is change of state?</h3>
Change of state of matter is the transformation of a substance from one phase of matter to another.
When a substance melts it has changed from a solid to a liquid state while when a substance is set on fire is changes from liquid to gaseous state as it boils.
Learn more about matter here:
brainly.com/question/3998772
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Answer:
Refraction is the bending of a wave when it enters a medium where its speed is different, like going from the air (gas) to a glass of water (liquid). Absorption is when light energy penetrates an object. Typically this energy is then converted to heat.
PH indicators detect the presence of H+ and OH-. They do this by reacting with H+ and OH-: they are themselves weak acids and bases. If an indicator is a weak acid and is coloured and its conjugate base has a different colour, deprotonation causes a colour change.
