Answer:
substance A is the best model for a solid :)
Explanation:
Answer:
Explanation:
IONIC-
metal & nonmental
1st word doesn't start with "mono"
2nd word can end in "-ate or -ite" (Polyatomic ions)
May need roman numerals
Reduce charges when writing formula
COVALENT-
2 non-metals
Names uses prefixes
2nd word can end in - ide
BOTH-
2nd element is a non-metal
A concave meniscus, occurs when the molecules of the liquid are drawn to those of the container. This occurs with water and a glass tube, or cup.
Adhesion is responsible for a meniscus and it has to do with high surface tension
Hope this helps you out a little bit
Answer is: A. food chains.
Plants convert solar energy into the chemical energy of sugars (food).
Solar energy is stored in chemical bonds of sugars (glucose for example).
The overall balanced photosynthesis reaction:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.
In carbon dioxide, carbon has oxidation number +4 and in photosynthesis carbon gain electrons (solar energy), so his oxidation number is lowered (reduced). Light energy is transformed into chemical energy, that is stored in carbohydrate molecules (glucose), which are synthesized from carbon dioxide and water.
The three reasons that scientists found Rutherfor's nuclear atomic model to be fundamentally incomplete are as follows:
Number 1) according to Rutherford, the electrons revolve in completely
circular orbits. However, if this was true the charged electron would
simply fall into the nucleus after losing energy.
Number 2)
According to Rutherford's model, the nucleus itself only consisted of
protons. However, as we now know due to research in quantum mechanics,
if this was true this would make the atom unstable due to the cycle of
attraction and repulsion.
Number 3) The neutrons which have also
been discovered since to be an important part of the atom, are not
mentioned at all in Rutherford's model.