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Midterm Review A
Review for midterm Part A
| Question | Answer |
|---|---|
| Law that states that the mass before a reaction will equal the mass after the reaction | Conservation of Mass |
| Method used to separate sand and water | filtering |
| Method used to separate salt and water | Evaporation |
| A property that helps to identify a substance but does not change the matter | physical property |
| an experiment in which nothing is allowed to enter or leave | closed system |
| The group of elements which do not react with other elements | noble gases |
| Where are metals found on the periodic table? | left side |
| a solid formed from the combining of 2 clear liquids | precipitate |
| How many elements are in KOH? | Three |
| the number written below and behind a symbol to show the number of atoms | subscript |
| property that can be determined by looking at the periodic table | chemical reactivity |
| a combination of 2 or more substances not chemically combined | mixture |
| How is the periodic table arranged? | atomic number |
| What kind of charge will an ion have if it gains electrons? | negative |
| If a gas escapes during a chemical reaction, the reaction is considered a(n) ___ system. | open |
| two or more elements chemically combined | compound |
| family of most active metals | alkali |
| the substance being dissolved | solute |
| the substance doing the dissolving | solvent |
| If an atom loses electrons, it will have a ___ charge. | positive |
| the ability of a substance to be hammered into thin sheets | malleability |
| matter that has no shape and does not take up a definite amount of space | gas |
| a substance composed of only one kind of atom | element |
| the smallest particle of matter | atom |
| group in the periodic table that contains elements used in computer chips | metalloids |
| the amount of heat needed to change the temperature of a substance 1 degree | specific heat |
| the ability of a substance to conduct heat | thermal conductivity |
| state of matter that has a definite shape and takes up a definite amount of space | solid |
| ability of a substance to be pulled into a wire | ductility |
| group of elements that are brittle, can be many colors, not shiny and poor conductors of heat and electricity | nonmetals |
| positive particle found in the nucleus of an atom | proton |
| negative particle that orbits the nucleus of an atom | electron |
| particle in the nucleus of an atom with no charge | neutron |
| state of matter that has no shape but takes up a definite amount of space | liquid |
Created by:
anita.parker
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