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Malstrom Matter
8th Grade Vocab
Term | Definition |
---|---|
Matter | Anything that has mass and takes up space |
Mass | The amount of matter in an object |
Weight | A measure of gravitational pull on an object |
Volume | The amount of space an object takes up |
Density | A measure of the amount of space between the particles of an object |
Atom | The smallest particle an element can be divided to and still be the same substance |
Proton | Positively charged particles in the nucleus of the atom |
Neutron | Particles in the nucleus of the atom with no (or a neutral) charge. |
Nucleus | The center of the atom containing protons and neutrons |
Electron | Negatively charged particles in the atom that move around the nucleus |
Electron Cloud | The area around the nucleus where electrons exist |
Atomic Number | The number of protons in an atom |
Mass Number | The total number of protons and neutrons in an atom |
Periodic Table | A chart that is an arrangement of elements in order of their atomic number |
Chemical Symbol | A one- two- or three-letter abbreviation for elements on the periodic table |
Average Atomic Mass | The weighted average of all the masses of the atom-includes protons and all naturally occurring isotopes |
Metal | An element that is shiny and conducts heat and electricity well |
Nonmetal | An element that conducts heat and electricity poorly |
Metalloid | An element that has properties of both a metal and a nonmetal |
Group | A vertical column of elements on the Periodic Table |
Period | A horizontal row of elements on the Periodic Table |