Term | Definition |
Mass | The amount of matter in an object |
Weight | How strongly gravity pulls on an object |
Volume | Measures how much space matter takes up |
Matter | Anything that has mass or volume |
Surface Tension | A property liquids have that acts as a skin |
States of Matter | One of the three forms matter can take on |
Density | The amount of mass for each centimeter of a substance |
Buoyancy | The resistance to sinking |
Element | A material that can not be broken down into anything simpler by chemical reactions |
Metal | elements that share common properties |
Atom | The smallest unit of an element that retertains theproperties of that element |
Nucleus | the center of an atom |
Proton | A partical with one unit of positive energy |
Neutron | A partical with no electric charge |
Electron | Smaller particals with one unit of negitive electric charge |
Chemically Reactive | When an atom needs more electrons in its shell to fill them |
Molecule | Particals with more than one atom joined together |
Atomic Mass | Some of all the protons and neutrons in an atom |
Noble Gases | Elements that don't mix with other elements |
Malleability | The ability to be bent flattened or hammered without breaking |
Ductillity | The ability to be pulled into thin wires without breaking |
Nonmetals | Exellent insulators of heat and electricity |
Insulators | Matrials that are poor conducters of heat and elecricity |
Corrosion | When metals combined with nonmetas from the environment |
Semiconductor | material that conducts electricity better than a nonmetal but not as well as a metal |
Physical change | alternates a form without changing what kind of matter there is |
Sublimation | a change of stage directly from a solid to a gas |
Melting point | the tempature when a substance melts |
Boiling point | the tempature when a substance boils |
Freezing point | the tempature when a substance freezes |
Thermal expansion | the increase in an object's volume due to a change in heat |
Thermal contraction | the decrease in an object's volume due to a change in heat |
Mixture | a physical cobination of substances |
Colloid | a mixture simular to a suspension exept it's parts do not settle |
Solution | a mixture with parts that blend in so it looks the same everywhere |
Solute | the smaller amount that dissolves in a solution |
Heterogeneous | mixtures where you can plainly see all the parts |
Suspension | heterogeneous mixtures that look smooth or creamy plainly, but under a microscope you can see it clearly |
Chomotography | when liquids travel up the special paper and carries small particals with it |
Solvent | the larger amount that dissolves the other substance |
Alloy | a solution of a metal and another solid |
Solubility | the maximum amount of a solute that can dissolve in a solvent |
Distillation | the process of separtating 2 liquids by using evaporation and condension |