3 years ago

Why does a solid change to liquid when heat is added?

1 answer:

7 0

When a solid is heated, the particles are given more energy and start to vibrate faster. at a certain temperature, the particles vibrate so much that there order structure breaks down. at this point the solid melts into liquid

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The reaction below shows how silver chloride can be synthesized.

Vesna [10]

$AgNO_{3} _{(aq)} + NaCl_{(aq)} ----\ \textgreater \ NaNO_{3} _{(aq)} + AgCl _{(aq)}$
mole ration of $AgCl _{(aq)} : AgNO_{3} _{(aq)}$ = 1 : 1

∴ if moles of $AgNO_{3} _{(aq)}$ = 15.0 mol
then " " $AgCl _{(aq)}$ = 15.0 mol

∴ the Option 2 is the answer.

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3 years ago

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Which statement best explains the energy change that will occur when the

amid [387]

Answer:the answer is D

Explanation:

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2 years ago

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Whe. does water have its highest density

lesya [120]

<span>4 degrees C is when it is at its highest density

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2 years ago

An unknown gas x is said to be colourless, odourless, soluble in water and has a sharp refreshing taste

Igoryamba

Answer:

I. CO2

II. the lime water turns milky

III. an insoluble solution was formed; precipitation

IV. CO2+Ca(OH)2-----> CaCO3 + H2O

8 0

3 years ago

The decomposition reaction is: (a.) A+B --> AB (b.) AB+CD--> <-- AD+BC (c.) AB --> A+B (d.) none of the above

JulijaS [17]

The general formula for a decomposition reaction is shown as option C. AB -> A + B. This type of reaction is simply when a complex compound and or substance is broken down to form its substituent atoms of their respective elements. It is energy releasing as compounds are broken down and is the inverse of a synthesis type of chemical reaction.

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3 years ago