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elements,compounds
elements compounds and atoms
Question | Answer |
---|---|
ELement | A pure substance that cannot be broken down |
Pure Subtance | Matter made up of the same particals throughout |
Compound | Matter composed of 2 or more elements that are chemically combined |
Atmosphere | A mixture of mainly nitrogen and oxygen |
Matter | Anything that has volume and mass |
Oceans | Water is made up of Hydrogen and Oxygen |
Elements of the systems | Only a small number of elements found in Earth's systems |
Periodic Table of Elements | An arrangement of elements according to their atomic number |
Solid Earth | Oxygen and Silicon are the most abundant elements in Earth's crust |
Chemical Symbol | The symbol that represents the elements on the periodic table |
Living Matter | Cells from living matter made of mostly carbon,hydrogen,oxygen etc. |
Chemical Reaction | The process of which elements change to make new ones |
Physical property | The characteristics of which can be observed without changing the subtance |
Chemical Formula | A shorthand notation using chemical numbers and number of atoms |
Groups | Vertical rows on the periodic table |
Atom | The smallest part of an element or compound |
Atomic Number | The number of protons in a atomic nucleus |
Periods | Horizontal rows on the periodic table |