Grading Period One Flashcards
(93 cards)
What is matter
Anything that has mass and volume
Mass is a measurement that reflects
Amount of matter
Volume is a measure that reflects
Amount of space
Matter is composed of
Atoms
Adams are made up of
Protons neutrons and electrons
What are the three states of matter
Solid liquid gas
Matter change States when
Energy is added or removed
Matter can be further classified into how many categories
two
The two further classification of matter are
Pure substances and mixtures
Pure substances can be further classified into what two categories
Elements and compounds
Mixtures can be further classified into what two categories
Homogeneous mixtures and heterogeneous mixtures
Pure substances always have the same
Composition this is known as a law of constant composition
Elements
Contain only one type of Atom
Diatomic elements
Nitrogen oxygen fluorine neon argon krypton hydrogen
Compounds
Contain two or more different types of Atoms bonded together in a particular way
Chemistry is the study of
Matter and the changes that it undergoes
Mixture
Combination of two or more pure substances in which each pure substance retains its individual chemical properties. It is a combination of elements and compounds.
Homogeneous mixtures
Have the same consistency throughout. Can either be a solution or an alloy. Contains solids liquids or gases.
Alloys
Are a mixture of or a metal and a nonmetal
Examples: brass, steel
A physical property of matter
Observed or measured without changing the samples composition
Observations quantitative or qualitative descriptions
Examples: older ,color ,volume ,state ,luster ,density …
What is a chemical property of matter?
Ability of a substance to combine with or change into a new substance(s) Examples: flammability, resting, growth…
What is physical change?
Alters a substance without changing its composition
What are the most common physical changes
Those that involve a state change
Examples: solid to liquid ,liquid to gas ,gas to solid ,gas to liquid, liquid to gas
What are more examples of physical changes?
Grinding something into powder, chopping wood, etc.