Answer:
A basic oxide is an oxide which when combined with water gives off a base. When a substance reacts chemically, both as a base or acid it termed as an amphoteric solution. Neutral Oxide is one which neither has an acidic characteristic or a basic one. Metal Oxides have an oxidation number of -2 and generally comprise of an oxygen anion.
Answer:B
Explanation:As the water heats up the particles will speed up hitting and colliding with each other which makes the water hot
The lowest amount of significant figures has to be what the answer is...
7.6cm is 2 sig figs where 13.48 is 4, so the answer can only really be as precise as the smallest one (7.6)
7.6 + 13.48 = 21.08cm
Put it into 2 sig figs makes it
=21 cm (2s.f) <— don’t forget to write 2 sig figs next to it because otherwise it is a false answer
amu stands for atomic mass unit. this is the approximate weight of one proton or neutron. since it is 65.39 you could not have an actual zinc atom that weighed 65 and 39/100s of an atomic particle. instead this number is the average weight of a bunch of zinc particles that differ in numbers of whole amu numbers.
In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
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