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Questions and Answers
What is the primary characteristic of an element?
What is the primary characteristic of an element?
- It is composed of two or more different elements
- It is a material composed of two or more simpler substances
- It can be broken down into other substances by chemical reactions
- It is a substance that cannot be broken down into other substances by chemical reactions (correct)
Which separation technique involves the conversion of a liquid into vapour that is subsequently condensed back to liquid form?
Which separation technique involves the conversion of a liquid into vapour that is subsequently condensed back to liquid form?
- Crystallisation
- Evaporation
- Distillation (correct)
- Filtration
What is the process of separating components of a liquid, especially ink?
What is the process of separating components of a liquid, especially ink?
- Solubility
- Chromatography (correct)
- Filtration
- Crystallisation
What is the term for the solidification of a liquid substance into a highly structured solid?
What is the term for the solidification of a liquid substance into a highly structured solid?
What is the primary factor that affects the solubility of a substance?
What is the primary factor that affects the solubility of a substance?
What is the process of separating an insoluble solid from a liquid through filter paper?
What is the process of separating an insoluble solid from a liquid through filter paper?
What is the process of particles moving from an area of high concentration to an area of low concentration?
What is the process of particles moving from an area of high concentration to an area of low concentration?
What is the term for the average mass of all different isotopes of an element?
What is the term for the average mass of all different isotopes of an element?
What is the result of the formation of a covalent bond between two atoms?
What is the result of the formation of a covalent bond between two atoms?
What is the name of the process in which a solid changes directly into a gas?
What is the name of the process in which a solid changes directly into a gas?
What is the outermost energy level of an atom called?
What is the outermost energy level of an atom called?
What is the number of electrons required by Hydrogen and Helium to achieve a stable outer shell configuration?
What is the number of electrons required by Hydrogen and Helium to achieve a stable outer shell configuration?
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