22 terms

Science 9 Chemistry 2.1

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chemistry
the study of matter and how it changes
matter
anything that has mass and takes up space
mixture
two or more substances that are mixed together but not chemically combined
pure substance
A substance made of only one kind of matter and having definite properties.
heterogeneous
a mixture where the components of the mixture are not uniform
homogeneous mixture
a mixture where the components that make up the mixture are uniformly distributed throughout the mixture
element
A pure substance made of only one kind of atom
compound
A substance made up of atoms of two or more different elements joined by chemical bonds
physical properties
Characteristics that can be observed or measured without altering the substance
chemical properties
Characteristic that cannot be observed without altering the substance
chemical reaction
process that changes one set of chemicals into another set of chemicals
malleability
the ability of a substance to be hammered or beaten into thin sheets
texture
The feel, appearance, or consistency of a surface, substance, or fabric.
viscosity
the resistance of a fluid to flow
conductivity
The ability of an object to transfer heat or electricity to another object.
solubility
the ability of one substance to dissolve in another at a given temperature and pressure
melting point
The temperature at which a solid becomes a liquid
boiling point
The temperature at which a liquid changes to a gas
state of matter
A physical property that describes matter as a solid, liquid, or gas.
react
show a response or a reaction to something
flammability
the ability of a substance to burn
corrosion
the gradual wearing away of a metal element due to a chemical reaction