Structure and Properties of Matter
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These flashcards cover key concepts related to the structure and properties of matter, focusing on atoms, classifications of matter, and the characteristics of substances.
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9 Terms
What are the three subatomic particles of an atom?
Protons, neutrons, and electrons.
What is the nucleus of an atom composed of?
Neutrons and protons.
Define matter.
Matter is anything that has mass and takes up space.
What are the two main categories of matter?
Pure substances and mixtures.
What is a pure substance?
A substance made up of one type of atom, molecule, or compound.
What is a molecule?
A group of two or more atoms held together by chemical bonds.
What are the charges of protons, neutrons, and electrons?
Protons are positively charged, neutrons have no charge, and electrons are negatively charged.
What is a heterogeneous mixture?
A mixture that does not have a uniform composition.
What is a homogeneous mixture?
A mixture that has a uniform composition throughout.
