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Grade 9 Science 4RJ2
RJs Study Stack for Chemistry
| Question | Answer |
|---|---|
| Mass | the amount of matter in something |
| Chemical reaction | a process that rearranges the molecular structure of matter |
| Chemical change | a change in the starting substance and a production of one or more new substances |
| Sublimation | from solid to gas or gas to solid |
| Electron | a subatomic particle with negative charge and is on the outside of the atom |
| Nucleus | both the neutrons and protons in the middle of an atom |
| Metals | a substance that is shiny, malleable, hard, good conductor of heat and electricity |
| Volume | how much space an object takes up |
| Element | a substance that is made up of one type of atom |
| Suspension | a fluid that is made up of different types of solid particles (at least two) |
| Proton | a subatomic particle that has the positive charge that is in the middle of an atom |
| Periods | a row on the periodic table (7 of them) |
| Metalloids | elements that have the qualities of a metal and a non-metal (ex. silicon) |
| Density | mass per unit volume of a substance |
| Atom | the smallest unit of an element |
| Solute | the substance that is being dissolved in a solution |
| Solvent | the substance that is doing the dissolving in a solution |
| Solution | two or more substances mixed together where you cannot see the different parts. |
| Neutron | the subatomic particle that has no charge and might be in the nucleus with a proton |
| Covalent bond | two different atoms are sharing electron and causes them to be linked together. This helps them to have a full outer shell. |
| Non-metals | an element not having the character of a metal. Do not conduct well, not shiny, very brittle |
| Chemical formula | notation that indicates the type and number of atoms in a pure substance |
| Compound | a couple of different types of elements making up a pure substance |
| Chemical equation | a symbolic representation of a chemical reaction |
| Ionic bond | a bond between a positive ion and a negative ion that results in a neutral charge. Opposites attract |
| Qualitative | shows the qualities of a substance and has nothing to do with numbers (example how it smells, feels, tastes) |
| Quantitative | the qualities of a substance that has something to do with numbers (you can measure this) for example how big it is, mass. |
Created by:
marsenault