Vocabulay 2.1 Flashcards
the minimum amount of energy required to initiate a chemical reaction; written as Ea and measured in kilojoules is called?
Activation energy
the forces that hold atoms together, these may be ionic, covalent or metallic is called?
Chemical bond
a chemical reaction; a process that changes substances into new substances (related word: chemical reaction) is calld?
Chemical change
a characteristic of a substance that is measurable or observable during a chemical reaction; includes pH, heat of combustion, reactivity, etc. is called?
Chemical property
a fundamental principle of science stating that mass cannot be created or destroyed in a closed system through ordinary chemical or physical means is called?
Law of conservation of mass
a change in matter that does not affect its chemical composition is called?
Physical change
a characteristic that can be observed (intensive), such as texture, color, odor, melting point, boiling point, density, or measured (extensive) such as mass, length, volume, that is used to describe matter and can be observed or measured without changing its composition is called?
Physicals property
solid particles that have been separated from a solution is called?
precipitate
the substances that are formed during a chemical reaction; in a chemical reaction the arrows point toward the product is called?
product
the substances present before a chemical reaction occurs; in a chemical reaction the arrow usually points away from the reactant(s) is called?
reactant
a substance that has the ability to be dissolved by a solvent to create a solution
solute
a mixture in which a solid and a liquid or two liquids are mixed so evenly, that it is not possible to see the separate particles
solution
the substance that dissolves another substance
solvent
