Answer:
Can dissolve in water.
Explanation:
The compounds can be ionic, molecular or metals. Ionic compounds are formed by the bond between a metal and a nonmetal, in which the metal donates electrons (becoming a cation), and the nonmetal gains electrons (becoming an anion).
The molecular compounds are formed by the bonding of nonmetals, and the bond happens by the share of electrons. The metal bond occurs with metal elements, which loses electrons, and the cations are immersed in the electrons lost.
The properties of the compounds depend on the bond, the geometry, the molar mass, and the phase of it. So, comparing ionic and molecular compounds, both can dissolve in water. Generally, all the ionic compounds are soluble in water, and the molecular compounds are soluble if they're polar.
Only molecular compounds have molecular structures; the reactivity doesn't depend on the bond, but of the stability of the compound, and on with what compound it will react; the ionic compounds are strongly attracted by ionic forces, so they are solid at temperature ambient and have high boiling points. The boiling point of the molecular compound depends on its molecular mass.
The correct answer to this open question is the following.
Two examples of how engineers use their knowledge of atoms to create new technologies would be the following.
1.- Engineers can develop new medicines for chronic diseases when they use their knowledge about atoms. With new technologies and different scientific approaches, this new molecular medicine can be more effective in the treatment of terrible diseases that affect humans. The challenge lies in how to make these new medicines more affordable to all kinds of people, not only rich people.
2.- Engineers can also apply their knowledge about atoms to improve the water conditions so more people can have freshwater. Engineers that specialize in the environment can research the properties of water molecules and atoms, so they can develop new ways to purify and improve the quality of water, that we know that water scarcity is a major problem in many parts of the world.
Answer:
Natural selection
Explanation:
Adaptation deals with organisms becoming more suited for their environment. It does not directly determine survival and reproduction.
Artificial selection is caused by humans. Therefore, adaptability may not play a role in this selection.
Natural selection is caused directly through adaptability. It results in organisms reproducing if they are capable of survival. Organisms that cannot adapt do not survive.
True. light is particles. photons, however are waves.
A
nswer: -
C. Energy is released by the reaction
Explanation:-
An exothermic reaction is one in which during the progress of the reaction heat is evolved.
So energy is released by the reaction.
It cannot be created as energy is neither created nor destroyed as per the Law of conservation of energy. Energy is not transferred either.
The energy released during the progress of the reaction originates from the chemical bonds of the reactants as they break during their conversion into products.