Podcast
Questions and Answers
What is a characteristic of pure substances?
What is a characteristic of pure substances?
- Particle composition is not fixed, but can be separated by physical methods
- Constituent particles have a fixed composition (correct)
- Particles of different pure substances are identical
- Composition of particles varies from one sample to another
What is a way to separate the components of a mixture?
What is a way to separate the components of a mixture?
- By heating or cooling
- By simple hand-picking, filtration, crystallisation, distillation, etc. (correct)
- By dissolving in water
- By chemical reactions
What is an element?
What is an element?
- A type of compound
- A pure substance consisting of only one type of atoms (correct)
- A type of mixture
- A type of pure substance with more than one type of atoms
What is a characteristic of heterogeneous mixtures?
What is a characteristic of heterogeneous mixtures?
What is a compound?
What is a compound?
What is a characteristic of glucose?
What is a characteristic of glucose?
What is the typical sequence of states of matter when a substance is heated?
What is the typical sequence of states of matter when a substance is heated?
What is the main difference between a pure substance and a mixture?
What is the main difference between a pure substance and a mixture?
What is the term for a mixture in which the components are uniformly distributed throughout the bulk?
What is the term for a mixture in which the components are uniformly distributed throughout the bulk?
What is the term for the process by which a gas changes to a liquid?
What is the term for the process by which a gas changes to a liquid?
What is an example of a homogeneous mixture?
What is an example of a homogeneous mixture?
What is the classification of matter that includes both pure substances and mixtures?
What is the classification of matter that includes both pure substances and mixtures?
What is the fundamental characteristic of solids?
What is the fundamental characteristic of solids?
What is true about the particles in a gas?
What is true about the particles in a gas?
What is common to all three states of matter?
What is common to all three states of matter?
What happens to the particles in a substance when it changes from a solid to a liquid?
What happens to the particles in a substance when it changes from a solid to a liquid?
What is true about the shape of a liquid?
What is true about the shape of a liquid?
What can cause a change from one state of matter to another?
What can cause a change from one state of matter to another?
