Valence Electron is the outermost electrons, family(Alkali) 1 has 1 valence electrons and family(Alkaline) 2 has 2 valence electrons.
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Answer:
The false statement from the given statements is option a.
Explanation:
Hypothesis:
A hypothesis is a intelligent guess or prediction to interpret or explain any phenomena.
It is tested through the series of experiments and by number of studies to actually decide whether hypothesis is in agreement with observation and results predicted by it. These prediction are made on basis of limited evidences. It can be false or true.
Theory:
A theory is an in depth explanation behind any physical phenomena which has been tested multiple times through the correct scientific methods and experimentation. It will give same results and observations.
Answer:
4.Anything that has mass
Explanation:
In order to appreciate what matter is, we must first know that matter is the 'stuff' that makes up the universe. Everything in the universe is composed of matter. Matter in turn is made up of atoms. Intact mass is the quantity of matter in a body.
All matter must have mass and occupy space. Hence all matter must have a measurable mass. This is a fundamental property of all matter. Hence every object in the universe has mass because it is composed of matter. We find matter in our plates, spoons , clothes and indeed everything we see in the universe! For instance, you can measure the mass of a spoon because it is made of matter which has mass and occupy space.
Depending on the testing process being used, it may affect the object by making it shape differently, scratch, it or sometimes do absolutely nothing. hope this helps:)
Fertilizer use the run on can go into fresh water
