GSU CHEM 1211K Test 1 Flashcards
Atom submicroscopic particles that are the building blocks of all matter
Molecule two or more atoms held together by covalent bonds
Chemistry The science that seeks to understand the behavior of matter by studying the
behavior of atoms and molecules
Hypothesis proposed explanation of observation
scientific law(principle) summarizes past observations and predicts future observation
scientific theory explaining what nature does and why
Three states of matter solid, liquid, gas
Solid -Retains a fixed volume and shape
-Not easily compressible
-Does not flow easily
Liquid - Assumes the shape of the part of the container which it occupies
- Not easily compressible
-Flows easily
Gas - Assumes shape and volume of its container
-compressible
-Flows easily
Difference between Solid and Gas Solid isn't compressible while Gas is compressible
Matter: Variable Composition? Yes: Mixture
No: Pure substance
A mixture is either homogeneous or heterogeneous
A pure substance is either an element or compound
Distillation -Separating liquids of different boiling points
-Collecting pure liquid samples by condensation
, GSU CHEM 1211K Test 1 Flashcards
Filtration the process that separates a solid from the liquid in a heterogeneous mixture by
using a funnel
Decanting separating water and sand by pouring out water carefully
physical change change in appearance, not composition
chemical change Change in the composition of matter
Iron rusting is an example of _________________. chemical change
dry ice subliming is an example of _______________. physical change
Gas burning is an example of ________________. chemical change
evaporation of rubbing alcohol is an example of physical change
____________.
Energy the capacity to do work
Work force applied across a distance
Changes in matter, both physical and chemical, result in matter gaining or releasing energy.
____________.
kinetic energy -energy of motion
-motion of atoms,molecules, and subatomic particles
potential energy energy stored in the matter due to composition of the matter and its position relative
to other things
Energy is neither _______________. created nor destroyed
The total quantity of energy remains _________. constant
Atom submicroscopic particles that are the building blocks of all matter
Molecule two or more atoms held together by covalent bonds
Chemistry The science that seeks to understand the behavior of matter by studying the
behavior of atoms and molecules
Hypothesis proposed explanation of observation
scientific law(principle) summarizes past observations and predicts future observation
scientific theory explaining what nature does and why
Three states of matter solid, liquid, gas
Solid -Retains a fixed volume and shape
-Not easily compressible
-Does not flow easily
Liquid - Assumes the shape of the part of the container which it occupies
- Not easily compressible
-Flows easily
Gas - Assumes shape and volume of its container
-compressible
-Flows easily
Difference between Solid and Gas Solid isn't compressible while Gas is compressible
Matter: Variable Composition? Yes: Mixture
No: Pure substance
A mixture is either homogeneous or heterogeneous
A pure substance is either an element or compound
Distillation -Separating liquids of different boiling points
-Collecting pure liquid samples by condensation
, GSU CHEM 1211K Test 1 Flashcards
Filtration the process that separates a solid from the liquid in a heterogeneous mixture by
using a funnel
Decanting separating water and sand by pouring out water carefully
physical change change in appearance, not composition
chemical change Change in the composition of matter
Iron rusting is an example of _________________. chemical change
dry ice subliming is an example of _______________. physical change
Gas burning is an example of ________________. chemical change
evaporation of rubbing alcohol is an example of physical change
____________.
Energy the capacity to do work
Work force applied across a distance
Changes in matter, both physical and chemical, result in matter gaining or releasing energy.
____________.
kinetic energy -energy of motion
-motion of atoms,molecules, and subatomic particles
potential energy energy stored in the matter due to composition of the matter and its position relative
to other things
Energy is neither _______________. created nor destroyed
The total quantity of energy remains _________. constant
