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science vocabulary
| Question | Answer |
|---|---|
| goggles | Protective eyeglasses,usually made of plastic or glass and fitting tight to the face. |
| laboratory equipment | These materials are highly varied: measurement instruments, various containers, heat sources, experimentation materials. |
| Triple beam balance | A triple beam balance is a type of balance commonly used in the laboratory to determine the mass (by weight comparison) of samples. |
| finding density | An object's density is the ratio of its mass to its volume. |
| Density | amount of matter in a given space. |
| chemical changes | Chemical changes occur when a substance combines with another to form a new substance. |
| Physical changes | Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance. |
| Parts of atoms | Pprotons, neutrons, and electrons. Protons have a positive charge, electrons have a negative charge, and neutrons have no charge. |
| Periodic table | Table of chemical elements: a table of the chemical elements arranged according to their atomic numbers. |
| Chemical formulas | A representation of a substance using symbols for its constituent elements formula statement. |
| Equations | A written representation of a chemical reaction, in which the symbols and amounts of the reactants are separated from those of the products by an equal sign, arrow, or a set of opposing arrows. |
| speed graph | Speed graph= distance and time. |
| Balanced forces | Two or more forces are balanced if their vector sum is zero. |
| Unbalanced forces | A force that together can equal a certain number and will make a change of the objects motion. |
| Newton's Laws | They describe the relationship between the forces acting on a body and its motion due to those forces. |
| Speed/Distance/Time calculations | speed= distance divided by time. |
| Acceleration graph | Acceleration graph= distance and speed. |
| chemical changes examples | •burning wood •dissolving salt in water |
| Physical changes examples | •crumpling a sheet of paper •melting an ice cube •casting silver in a mold •breaking a bottle |
Created by:
schnucki88
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