Answer:
A periodic law is when there is a stating/table of elements listed in order with their numbers, (atomic numbers/weight) and fall into certain groups with similar elements.
You never can know the exact value of a physical or chemical dimension because several reasons: all the instruments have a certain sensibility (sensibility is the smallest variation of the dimension that the instrument can measure) that cannot be overcame.
Answer:
There are many leaf function but the main one is it produces food for the plant by photosynthesis.
Other function of leaves
• store food during germination
• protect vegetative and floral buds
• the leaves carry out the process of respiration in plants.
• leaf helps in transpiration by realeasing excess water.
Answer:
The orange-colored band, made of the pigment called carotenoids. is the most soluble in alcohol, so it traveled the farthest.
Explanation:
The pigment that traveled the furthest was carotene xanthophyll because it was the most soluble in the solvent.
