Answer:
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
A double displacement reaction in which on e of the product is formed as a solid is called as precipitation reaction.
The balanced chemical equation is:
The most common word is microorganism.
The word <em>animalcule</em> (Latin <em>animal </em>+ <em>culum</em> = <u>small anima</u>l) refers to a <em>microscopic organism</em>.
Other words could be protozoan, amoeba, and paramecium.
A thin gold foil .
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The boundary of a watershed is defined by the highest elevations surrounding a lake or river segment. A drop of water falling outside of the boundary will drain to another watershed.
Answer:
Atom
Explanation:
An atom can absorb or emit one photon when an electron makes a transition from one stationary state, or energy level, to another. Conservation of energy determines the energy of the photon and thus the frequency of the emitted or absorbed light.