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Physical Science Praxis 5442 Questions and Answers Latest Version Graded A+
What is the mass of one mole of carbon atoms?✔✔12 grams
What is the term for a homogeneous mixture of two or more substances?✔✔Solution
What is the process called when an acid and a base react to form salt and water?✔✔Neutralization
What is the universal solvent in chemistry?✔✔Water
What is the name of the positively charged ion in a salt?✔✔Cation
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What is the name of the negatively charged ion in a salt?✔✔Anion
What is the term for a chemical change that forms a solid from a solution?✔✔Precipitation
What is the term for the minimum energy required to start a chemical reaction?✔✔Activation energy
What kind of chemical reaction occurs when iron reacts with oxygen to form rust?✔✔Oxidation
What is the scientific name for rust?✔✔Iron(III) oxide
What is the state of matter with a definite volume but no definite shape?✔✔Liquid
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What is the state of matter with no definite shape or volume?✔✔Gas
What is the state of matter with both a definite shape and volume?✔✔Solid
What is the smallest unit of an element that retains its chemical properties?✔✔Atom
What is the name of the subatomic particle with a positive charge?✔✔Proton
What subatomic particle is found in the nucleus but has no charge?✔✔Neutron
What subatomic particle orbits the nucleus and has a negative charge?✔✔Electron
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