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Physical Science
| Question | Answer |
|---|---|
| physical science | The study of matter and energy |
| Matter | anything that has been meens and takes up space |
| Mass | The amount of material and object has |
| Chemistry | The study of matter and how it changes |
| Physics | The study of how energy acts with matter |
| unit | The known amount use for measurement |
| customary | ordinary |
| metric system | A system of measurement used by scientists |
| Meter | the basic unit of length in the metric system, it is about 39 inches |
| centimeter | 1/100 of a meter |
| millimeter | 1/1000 of a meter |
| meterstick | common tool for measuring length in the metric system |
| kilometer | a metric unit of measure that is equal to 1,000 meters |
| area | The amount of surface an object has |
| exponent | A number that tells how many times a number is a factor |
| gram | basic unit in the metric system |
| kilogram | a unit that equals 1000 grams |
| milligram | a unit that measures 1/1000 of a gram |
| centigram | a unit that measures 1/100 of a gram |
| cubic centimeter | a metric unit that means cm X cm X cm |
| Property | characteristics that help identify an object |
| atom | the building block of matter |
| molecule | the smallest part of a substance that keeps the characteristics of that substance |
| solids | a form of matter that has a definite shape and volume |
| liquids | a form of matter that has a definite volume but takes the shape of the container |
| gas | a form of matter that has no definite shape or volume |
| plasma | a very hot gas made of particles that have an electrical charge |
| states of matter | the form that matter has - solid, liquid and gas |
| Elements | matter that has only one type of atom |
| compound | a substance that is formed when atoms of two or more elements join together |
| proton | subatomic particle with a positive charge |
| electron | subatomic particle with a negative charge |
| neutron | subatomic particle that is neutral |
| atomic number | number of protons in a specific element |
| atomic mass | the number equals the sum of the protons and neutrons |
| Symbol | one or two letters used to represent an element's name |
| Periodic Table | an arrangements of elements by atomic number |
| Isotope | an element that has a different number of neutrons than protons and electrons |
| Deuterium | an isotope of hydrogen that has one proton and one neutron |
| Tritium | an isotope of hydrogen that has one proton and 2 neutrons |
| Family | a group of elements arranged with similar properties and in the same column |
| metals | type of element; usually solid at room temperature, shiny and good conductor |
| nonmetals | type of element with properties unlike metals |
| noble gases | type of elements made up of gases that do not combine with other materials |
| alloys | a mixture of 2 or more metals |
| inert | lacking the power to move |
| Enery level | one of the spaces around the nucleus in which electron move |
| Chemical Formula | tells the kind of atom and how many of each kind are in a compound |
| Subscript | a number in the formula that tells how many parts are in the compound |
| Radicals | a group of 2 or more atoms that act like 1 atom |
| Binary Compound | A compound that contains two elements |
| acid | a compound that reacts with metals to produce hydrogen |
| base | a compound that contains the OH radical |
| ph | a number that tells if an item is a base or acid |
| motion | a change in position |
| speed | rate at which the position of an object changes |
| distance | the length of the path between 2 positions |
| constant speed | speed that does not change |
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