hem/o-
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The combining form "oö-" means egg.
Hydro- refers to water or liquid, while hypo- means below or less than. For example, dehydration is a condition where the body lacks adequate water (hydro-), while hypoglycemia is a condition with lower-than-normal blood sugar levels (hypo-).
No, combining hydrogen and oxygen to form water is a synthesis reaction, not a double-replacement reaction. In a double-replacement reaction, the cations and anions in two compounds switch places to form new compounds.
Potassium ions have a combining capacity of +1 since they tend to form ionic compounds by losing one electron to achieve a stable electronic configuration. This makes them capable of combining with other ions that have a charge of -1 or with ions of higher positive charges to form a variety of compounds.
Water can be created by combining hydrogen and oxygen through a chemical reaction called combustion. When hydrogen and oxygen molecules react, they form water molecules as a byproduct. This process releases energy in the form of heat and light.