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Basic Chemistry / Exam 2025 Actual
Exam Complete Accurate Questions
with Detailed Verified Answers.
_____________Quiz____________? matter -
Answer ✓✓
anything that occupies space and has mass _____________Quiz____________? element -
Answer ✓✓
a pure substance that cannot be broken down into other substances by chemical reactions _____________Quiz____________? compound -
Answer ✓✓
substance containing two or more elements chemically combined in a fixed ratio _____________Quiz____________? atom -
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the smallest particle of an element that retains the properties of the element
_____________Quiz____________? proton -
Answer ✓✓
subatomic particle having a positive charge; found in nucleus _____________Quiz____________? electron -
Answer ✓✓
subatomic particle having a negative charge; not in nucleus but surrounds it _____________Quiz____________? neutron -
Answer ✓✓
subatomic particle without a charge; found in nucleus _____________Quiz____________? nucleus -
Answer ✓✓
protons and neutrons together; make up the center of an atom _____________Quiz____________? atomic number -
Answer ✓✓
Answer ✓✓
occurs when atoms share electrons _____________Quiz____________? molecule -
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atoms that are held together by covalent bonds _____________Quiz____________? chemical reaction -
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interaction of substances that lead to the formation of new substances _____________Quiz____________? reactant -
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the starting materials for a reaction; found on left side of chemical equation _____________Quiz____________? product -
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ending materials of a reaction; found on right side of chemical equation _____________Quiz____________?
organic compound -
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substance made of two or more elements, one being carbon _____________Quiz____________? inorganic compound -
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substance made of two or more elements, none of which is carbon _____________Quiz____________? valence electrons -
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electrons in the outermost energy level; they are involved in bond formation _____________Quiz____________? single bond -
Answer ✓✓
a covalent bond in which one pair of electrons is shared _____________Quiz____________? double bond -
Answer ✓✓
a covalent bond in which four valence electrons are shared between two atoms
