Question

1. Weight of the element is equal to its
expressed in a.m.u.
2. Number of
increases with increase in temperature.
3. Upper layer of ice-acts as an
and protects the fish and animals from cold.
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Answer 1

Answer:

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Answer 2

Answer:

1) The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element. Average masses are generally expressed in unified atomic mass units (u), where 1 u is equal to exactly one-twelfth the mass of a neutral atom of carbon-12.

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2) increasing the temperature the kinetic energy of particles increasing and thus more effective collisions occur thus increasing the rate of reaction....

3) When lakes and ponds freeze, the ice on the surface forms pockets of air and helps insulate the water so it doesn't freeze solid. ... Ice helps protect most aquatic plants and animals throughout the winter months. As ice melts in spring, it absorbs heat from the environment to slowly change its state back to liquid.....

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