Hello.
A substance that is composed of only one kind of atom, and in which cannot be separated into simpler substances are converted into another substance by chemical processes are elements. Some examples are hydrogen, oxygen, iodine, radium, magnesium, etc.
The most abundant greenhouse gas is water vapor.
Answer:
C.
Explanation:
The movement of the bow is Kinetic Energy.
Explanation:
Lithium, sodium and potassium are all group 1A elements and when we move down a group then there occurs an increase in atomic size of the elements. As lithium is the smallest and potassium being the largest so, when each of them will lose an electron and obtain a positive charge then size of lithium will further decrease.
Therefore, ions are ranked according to their increase in size as follows.
When an atom tends to gain electrons then it acquires a negative charge. This means that size of the atom increases.
So, more is the negative charge present on an atom more will be its atomic size. Therefore, correct order of increasing size for
is as follows.

Similarly, order of increasing size of
is as follows.

Answer:
the second one
Explanation:
metal doesn't act like a magnet because the domains don't have a preferred direction of alignment. Magnets are all aligned in a specific direction.