Matter Classification
Q: Matter that consists of two or more substances that can be separated by physical means.
A: Mixture
Q: The smallest chemical unit of matter, represented as a single shape or circle in a diagram.
A: Atom
Q: A change that alters the size or shape of a substance but does NOT alter its chemical properties.
A: Physical change
Q: The curved surface of an aqueous solution, measured horizontally from the bottom.
A: Meniscus
Q: The amount of mass in a given space, calculated as the ratio of mass to volume.
A: Density
Q: A pure substance made of only one type of atom.
A: Element
Name that movie!
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Name that movie!
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Q: How close a measured value is to the expected or accepted target value.
A: Accuracy
Q: The standard accepted density of pure water at standard ambient room temperature.
A: 1.00 g/mL
Q: A mixture that has the same composition throughout.
A: Homogeneous mixture
Q: Formed when two or more atoms are touching in a particle diagram, held together by chemical bonds.
A: Molecule
Q: A physical separation method that uses filter paper to separate a solid from a liquid.
A: Filtration
Q: By scientific convention, analog scale readings should be estimated to be the doubtful digit to this fraction of the smallest graduation mark.
A: One-fifth to one-tenth.
Q: If your measured experimental value is lower than the accepted value, your calculated percent error will have this mathematical sign.
A: Negative
Q: A pure substance made from two or more types of atoms chemically bonded together.
A: Compound
Q: The small number in a chemical formula indicating the amount of a specific type of atom.
A: Subscript
Q: A physical separation technique that separates liquid mixtures based on differences in boiling points and captures the boiled liquid.
A: Distillation
Q: The term for the smallest unnumbered graduation marks between consecutive numbered marks on glassware.
A: Minor scale
Q: The method of converting units without changing value by multiplying by conversion factors, also known as "Factor Labeling".
A: Dimensional Analysis
Q: A type of property that does NOT depend on how much material you are dealing with, such as boiling point.
A: Intensive property
Q: The total number of atoms in a single molecule of Al(CN)₃
A: Seven
Q: A technique that separates matter based on physical affinities like polarity, using a solvent and an initial pencil line.
A: Chromatography
Q: Between a 50 mL beaker, 125 mL flask, and a 10 mL graduated cylinder, the instrument that has the lowest uncertainty and highest precision.
A: 10 mL graduated cylinder
Q: Based on the rules for multiplication, the final answer to the calculation 12.257 x 1.162 must be rounded to this many significant figures.
A: Four