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chemical changes
Physical Changes
chemical properties
physical properties
100
an attraction between atoms that allows the formation of chemical substances that contain two or more atoms
What is a chemical bond
100
when a substance combines with another to form a new substance
What is a physical change
100
degree to which a substance can damage an organism.
What is toxicity
100
emission of light by a substance not resulting from heat
What is luminescence
200
any of a materials properties that becomes evident during a chemical reaction
What is a chemical property
200
major effect of the physical properties of the metal including strength and ductility
What is the crystallization process
200
energy released as heat when a compound undergoes complete combustion with oxygen under standard conditions
What is heat of combustion
200
m (mass) divided by (v) volume
What is density
300
a purposeful execution of chemical reactions to obtain a product, or several products
What is chemical synthesis
300
a pure chemical substance consisting of a single type of atom distinguished by its atomic number, which is the number of protons in its atomic nucleus
What is a chemical element
300
means thermodynamic stability of a chemical system
What is chemical stability
300
the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid
What is the boiling point of liquid
400
concerned with the chemistry of carbon and the elements and compound with which it reacts
What is an organic change
400
compounds such as sugars that can be separated by evaporation
What is a solution
400
the ability of a substance to burn or ignite, causing fire or combustion
What is flammability
400
the quantity of three-dimensional space enclosed by some closed boundary
What is volume
500
when a substance combines with another to form a new substance
What is a chemical change
500
property that is measurable whose value describes a state of a physical system
What is a physical property
500
often called the oxidation number, is an indicator of the degree of oxidation (loss of electrons) of an atom in a chemical compound.
What is the oxidation state
500
the ratio of force to the area over which that force is distributed
What is pressure