Test One Worksheet 1 Matter Flashcards
Chemistry
Study of matter and its changes
Matter
Anything with mass that takes up space
Classifying matter by phase
Solid, liquid, gas
Solid
rigid, fixed shape, fixed volume, cannot be squashed
Liquid
not rigid, no fixed shape, fixed volume, cannot be squashed
Gas
not rigid, no fixed shape, no fixed volume, can be squashed
Classifying matter: By type
Mixture, Homogenous, Heterogenous
Mixture
Combination of 2+ substances
Homogenous Mixture
Mixture with uniform composition
Heterogenous Mixture
Mixture with non-uniform composition
Pure substance
Form of matter that has specific composition and distinct properties, element
Compound
Composed of 2+ elements in a fixed proportion
Element
Substance not separated by chemical means, (pure substance)
Solution
Homogenous mixture, liquid phase
Properties of Matter: Physical Property
Measurable or observed w/o chemical change
Examples of physical properties
Length, Luster, Mass, Density
Chemical Property
Measurable or observed only by chemical change
Examples of chemical properties
Acidity, flammability, toxicity
Physical change
occurs w/o changing matter identity
Chemical change
occurs with changing matter identity
Extensive
Measurement of matter depends on amount of matter
Extensive Examples:
Volume, mass, size, weight, Length
Intensive:
Measurement DOES NOT depend on amount of matter
Intensive Examples:
Boiling point, color, temperature, luster, hardness, density
Quantitative
Has numerical value (measurement)
Qualitative
Has description
(observation)
Base Unit:
W/o prefixes, examples include m, g, s
Density
Mass/Volume
Temperature Kelvin
K= °C+273.15
Temperature degrees Celsius
°C= °F-32 /1.8
