Examlex
A one-group before-after test is known as a pre-experimental design.
Water
A clear, flavorless, scentless, and almost invisible chemical compound that primarily makes up the waters of Earth's rivers, lakes, and seas.
Electronegativity
A measure of an atom's ability to attract and hold electrons, influencing the bond type and polarity among atoms.
Electrons
Subatomic particles with a negative charge, found in all atoms and playing essential roles in electricity, chemistry, and bonding.
Compound
A substance made up of two or more different elements that are chemically bonded together.
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