Physical and Chemical Changes
Terms in this set (25)
a change of matter from one form to another without a change in chemical properties or the type of matter.
a physical combination of two r more substances which remain the same, even though they are physically close together. You can separate a mixture using physical properties. Example: separating fruit loops based on the colors of each.
a physical characteristic that can be observed or measured without changing what matter is made of. Example: color, texture, and size.
a chemical characteristic of matter that can be observed or measured which changes the kind of matter. Example: Vinegar mixed with baking soda will cause a different type of matter or substance.
this type of change occurs when substances bond together in new ways to produce something different from the original substance.
a substance formed when two or more chemical elements are chemically bonded together.
the amount of matter in an object
how strongly gravity pulls on an object.
to see; to notice and document changes you see.
The amount of space an object takes up
the degree of compactness of a substance or how tightly packed an object's particles are. It is the relationship between mass and volume.
the ability of a substance to dissolve; in other words, the particles disperse evenly throughout a liquid and remain invisible. For example: adding sugar into a glass of iced tea, although it looks as though the sugar has disappeared, you know it is still there because the tea tastes sweet.
the temperature at which something freezes.
the process when water vapor (water in its gas form) turns into liquid. It happens when molecules of water vapor cool and collect together as liquid water. Water vapor can be found on the outside of cold glasses, the warm side of windows, and in the clouds up in the air.
the process of changing something from a solid into a liquid (like ice into liquid water). It is the opposite of freezing.
to heat or become heated to the temperature at which bubbles rise and break at the surface of a liquid.
a scientist that researches how materials combine. Some develop new drugs to fight diseases, while others work in food and agricultural fields looking for was to improve crops.
a solid formed from the chemical reaction that takes place within a solution. Ex: soap scum which is formed when dissolved soap reacts with minerals dissolved in tap water.
change of state
the change of a substance from one physical state to another: For example a solid chaning to a liquid or a gas.
the basic unit of a chemical element.
to form a solution by mixing evenly
to change from water into steam or vapor; the change from a liquid to a gas
Change from liquid to solid when added to temperatures that are 32 degrees or less
A group of atoms bonded together
Characteristic used to describe something
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