Answer:
Hello There
Explanation:
External pressure has little effect on the solubility of liquids and solids.The solubility of gases increases as the pressure of the gas above a solution increases.
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Water is a compound consisting of 2 hydrogen atoms and 1 oxygen atom. The oxygen and the hydrogen are elements, while water is a compound.
Answer:
- a family is a group consisting of 2 parents and their children living together in a union.
or all desendants of a common ancestor
2. A period is a name given to the horizontal row of the periodic table.
3.
a.mg
b.k
c.Fe
d.cu
e.Al
4.
a.Carbon
b.Chlorine
c.Gold
d.strontium
5.
a.period 1
b.period 4
c.period 5
d.period 5
6.
a.group 6
b.group 2
c.group 7
d.group 8 belong ti 1st transitional elements.
7.
a.F
b.Na
c.Ar
d.V
e.I
Answer:
electrons release energy as they return to the ground state
Explanation:
when electrons fall to the ground state they emit radiations of unique frequencies
which is seen as lines separated by dark spaces
Hydrogen
Helium
Lithium
Beryllium
Boron