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7.1 Vocab
| Term | Definition |
|---|---|
| atom | the smallest particle of matter; make up everything that is considered matter |
| chemical reaction | A process in which one or more substances are converted to one or more different substances |
| density | How much matter is in a certain space. |
| flammability | How a substance interacts with fire. |
| inference | a conclusion or explanation made using your observations and prior knowledge |
| Law of Conservation of Mass | Matter is not created nor destroyed in any chemical or physical change |
| matter | anything that has mass and volume |
| model | a representation of an idea, an object or a process that is used to describe and explain phenomena that cannot be experienced directly |
| molecule | Made up of a group of atoms bonded together. |
| observation | how scientists collect data about the natural world around them using the 5 senses |
| property | A characteristic of a substance that doesn’t change. |
| phase change | When matter changes from one state (liquid, gas, solid) to another. |
| product | The new substances after a chemical reaction has occurred. |
| reactant | A substance you start with in a chemical reaction. |
| soluble | Describes a material that can dissolve (break apart) in a particular substance. |
| state of matter | Forms in which matter can exist. (solid, liquid, gas, plasma) |
| substance | Made of one type of material throughout. |