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Studying Materials
Vocab words for "Studying Materials Scientifically" unit
| Question | Answer |
|---|---|
| evidence | observations or data to support a statement, hypothesis, or point of view |
| hazardous materials | substances that can pose a danger to the health & safety of living things |
| reactive | substances capable of causing an explosion or providing heat or oxygen (oxidizers) that might cause a fire, or can emit toxic fumes when mixed with other substances |
| corrosive | (usually a liquid) that reacts with a solid material and chemically wear away |
| flammable | any substance substance that can catch on fire when exposed to a spark, flame, or heat source |
| mixture | a combination of more than one pure substance that can be physically separated |
| observation | notes taken that provide evidence using 5 senses |
| inference | a conclusion based on observations or what is already or known |
| toxic | poisonous |
| toxicity | The capability of a substance to cause harm in living systems over a period of time. |
| chemical properties | traits of a pure substance that you find by seeing if it reacts in a certain way with other chemicals. Chemical properties include pH, the production of a salt when an acid reacts with a metal, or a unique color change in a chemical reaction. |
| miscible or miscibility | two or more substances that can be mixed together in any ratio to form a single phase without separation |
| physical properties | a characteristic of a substance or material, such as color, density, flexibility, hardness. They help identify pure substances and never change whether there is a large sample or very small sample of material. |
| conductivity | The ability of an object to support the flow of heat or electricity |
| density | The mass per unit volume of an object. Density is a physical property used to find the identities of pure substances. Formula for density is- mass divided by volume. |
| reactivity | The ability of a substance to combine with another substance that may cause an explosion, provide heat or emit gases. |
| cubic centimenters (cm3) | Metric measurement of volume, usually for smaller amounts. |
| liter (l) | Metric measure of volume, for larger quantities. |
| metric system | The measuring system used by scientists and most countries other than the US. The metric system is based on the power of ten and to convert from one unit to another, the decimal place is moved. |
| milliliter (ml) | Metric unit of volume. 1000 milliliter = 1 L |
| qualitative | Description, observation or analysis of a substance based on its characteristics such as color, size, shape, etc. |
| quantitative | Description, observation or analysis of a substance based on measurements. |
| volume | The amount of space an object or substance occupies. |
| mass | The amount of matter in an object. |
| weight | The force exerted by a mass as a result of gravity. |
| trade-offs | An exchange of one thing in return for another. Trade-offs always involve balancing benefits against risk. |
Created by:
sallyhanh
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