When a candle burns, both physical and chemical changes take place. Identify
these changes. Give another example of a familiar process in which both the chemical
and physical changes take place.
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When a candle burns, both physical and chemical changes take place. Identify
these changes. Give another example of a familiar process in which both the chemical
and physical changes take place.
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Answer:
When a candle burns, both physical and chemical changes occur:
(i) Physical change: melting of wax, vapourisation of melted wax.
(ii) Chemical change: Burning of vapours of wax to give carbon dioxide, heat and light.
LPG is another example in which physical change occurs when LPG comes out of cylinder
and is converted from liquid to gaseous state and a chemical change occurs when gas burns
in air.
Explanation:
Answer:
thanks for the pts
Explanation:
sorry i dont no
Answer:
\huge{ \green{12 \: (Magnesium)}}12(Magnesium)
Explanation:
K and L shell can have at most 2 , 8 electrons and M has 2 electrons . So total no. of electrons
= 2 + 8 + 2 = 12=2+8+2=12
[ Note : General formula for electrons in nth shell is
= 2 {n}^{2}=2n
2
]