0
This is a very old observation, from the prehistoric times.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoA long time before there were calenders.
Add your answer:
Earn +20 pts
When was the element yttrium discovered?
The chemical element yttruim, pronounced IT-ree-em, was discovered in the year 1794 by a Finnish chemist, Johan Gadolin and is named after the town of Ytterby, Sweden.
What year was helium discovered?
Helium was discovered in 1895 by William Ramsay.
When was the element Bismuth discovered?
Bismuth was discovered around the year 1400.
Who discovered tin and in what year?
it was known by the ancients but the year is not specified
What year were calculations discovered?
1962
In what year was chemical energy dicsovered?
The same year that man discovered fire.
What field of science was being studied when acetone was discovered?
Acetone was discovered in the year of 1895 . Chemical Science was a top notch that time .
When matter changes and creates a new matter its called?
Much better. Ok, the answer is yes, matter can change shape and form. A good example is water. A liquid at room temperatue, when heated it becomes a gas, when cooled it becomes a solid.Ask yourself: What did my body look like a year before I was born?
What year did Marie Curie invent the polonium?
Chemical elements are not invented; they are discovered or prepared.Polonium was discovered (not invented) by Marie Curie and Pierre Curie in 1898.
When was the element yttrium discovered?
The chemical element yttruim, pronounced IT-ree-em, was discovered in the year 1794 by a Finnish chemist, Johan Gadolin and is named after the town of Ytterby, Sweden.
What does Mendeleev's periodic law stated?
physical and chemical properties are the fundamental property of d Atomic Mass.This law was stated in d year 1869.
What is the difference between chemical and physical reactions?
you can actually see physical onces by 12 year old who attends SCHS(short for the real name)
Are there any physical changes with 20-40 year olds?
No there are none at all not at all no change at all
Who discovered Florida and what year was it discovered?
mickey mouse year:1995
What year was the element yttrium discovered?
yttrium was discovered in the year 1794.
What best distinguishes the infancy stage from other stages of development?
Physical growth is most rapid in the first year and the most dramatic changes of infancy appear to be related to physical growth.
What year was ADHD discovered?
In the year 1902. Dr. Still discovered ADHD.
