Salts that are from strong bases and strong acids do not hydrolyze. Salts that are from strong bases and weak acids do hydrolyze, which gives it a pH greater than 7. Salts of weak bases and strong acids do hydrolyze, which gives it a pH less than 7.
Answer:
C) Modernization of humans
Answer:
a) sodium and chlorien atoms bond to form salt molecules
Explanation:
Pretty much all the other reactions can be reversed. Ice melting to form water can go back to being ice under freezing temperatures. H2O is H2O. It doesn't become a new compound due to temperature changes unless it is introduced to other elements. Carbon dioxide freezing to forming dry ice is typically a physical rxn. Salt and water mixing to form salt water although is chemical, can be easily reveresed if you were to boil off the water: all that would remain is salt.
Answer:
1. Nonmetal
2. Nonmetal
3. Covalent
Explanation:
Methane is the molecule being described in this question. It has a chemical formula of CH4 where four hydrogen atoms are bonded to one central carbon atom. Carbon as well as hydrogen are non-metallic elements, which means that they can only share their valence electrons to form a COVALENT BOND.
A covalent bond is a type of chemical bond in which two atoms share their valence electrons. It occurs between two non-metallic atoms. In this molecule, CH4, carbon and hydrogen share their valence electrons to form a covalent bond.
Answer:
1) adding ice
2) adding heat
3) altering amount of water
4) using a different kind of cocoa mix
Explanation:
Dissolution of a substance in another can be affected by temperature changes, concentration and the type of mix we are using.
The higher the temperature, the more readily a compound will dissolve in another. The rate of dissolution of a solute in a solvent is affected by prevailing temperature at hand.
The more the water which is the solvent, the more the solute that can be dissolved in it. Reaction rate is directly proportional to concentration.
A different cocoa mix might dissolve better in this case also.
