Characteristics of matter, mixtures and pure substances, identify elements and compounds.
Quiz by John Stegmaier
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19 questions
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- Q1Which of the following is a characteristic of a pure substance?It always has a variable boiling point.It can be separated by physical means.It has a fixed composition and distinct properties.It contains varying amounts of different components.30s
- Q2What distinguishes a compound from a mixture?A mixture has uniform properties throughout.A compound has a fixed ratio of elements chemically bonded together.A compound can be separated by physical means.A mixture consists of only one type of atom.30s
- Q3Which of the following is an example of an element?Carbon Dioxide (CO2)Salt (NaCl)Water (H2O)Oxygen (O)30s
- Q4Which of the following best describes a mixture?A substance with a uniform and definite composition.A combination of two or more substances that retain their individual properties.A material that can be classified as an element or a compound.A substance that cannot be separated by chemical means.30s
- Q5Which of the following correctly defines a compound?A substance formed when two or more elements chemically combine in a fixed ratio.A mixture of different substances that can be separated easily.An element that can stand alone and is not made of other elements.A substance that can exist in different physical states.30s
- Q6What is the main characteristic that differentiates a homogeneous mixture from a heterogeneous mixture?A homogeneous mixture has a uniform composition throughout.A homogeneous mixture has particles that settle over time.A heterogeneous mixture contains only one type of substance.A homogeneous mixture can be easily separated by filtration.30s
- Q7Which of the following is an example of a pure substance?Gold (Au)ConcreteSea waterAir30s
- Q8Which of the following statements is true about elements?Elements cannot be broken down into simpler substances by chemical means.Elements can be separated into simpler substances.Elements are always found in the form of compounds.Elements have variable compositions.30s
- Q9What characterizes a saturated solution?It contains only pure substances.It contains the maximum amount of solute that can dissolve at a given temperature.It has no solute remaining.It can dissolve more solute if temperature decreases.30s
- Q10Which of the following is an example of a pure substance?SandSaltwaterAirWater (H2O)30s
- Q11Which of the following represents a compound?O2ClNaClNa30s
- Q12What is a characteristic of mixtures?They have a fixed composition.They consist of only one type of particle.They cannot be separated into their components.They can be separated by physical methods.30s
- Q13Which of the following is an example of an element?Gold (Au)Water (H2O)Sodium Chloride (NaCl)Carbon Dioxide (CO2)30s
- Q14Which of the following substances is a homogeneous mixture?SaladVinegarConcreteSand30s
- Q15Which of the following is a characteristic of pure substances?They are always found in solid form.They always contain more than one type of particle.They can easily change into different substances.They have consistent properties throughout.30s