University:
Colorado State University
Course:
CHEM 112 | General Chemistry Lab I
Academic year:

2022
Views:

228

Pages:

4
Author:

Alexa Livingston

Name: REIER KEY UNIT 3 STUDY GUIDE Complete the table below: TERM DEFINITION EXAMPLE Matter Anything that has mass takes & space. Elephant Pure Substance Made of I of kind atom or multiple in definite ratios. H2O oxygen Mixture No definite ratio. Air Homogeneous Mixture Uniform Composition Blood Heterogeneous Mixture NON- uniform composition Brass Vinegar Fruit Salad Oil Water Element Made of 1 Kind of atom. carbon Nitrogen Compound Fixed composition. can be broken down into elements. sugar . Salt Create a flowchart using the terms above. Matter! Mixtures [Homogeneous [Heterogeneous | Pure Substances! Element Compand List FOUR Chemical Properties and FOUR Physical Properties of Matter CHEMICAL PROPERTIES 1. Flammability 2. Toxicity 3. pH 4 Reactivity PHYSICAL PROPERTIES 1. Color 5. Hardness 2. Length 16. Luster 3. mass 7. Malleability 4. volume 8. Ductility Draw a diagram that shows the basic physical changes that the states of matter undergo (from solid-liquid-gas) sublimation Condensation Evaporation Freezing melting List FOUR Chemical Changes and FOUR Physical Changes of Matter: CHEMICAL CHANGES 1. Combustion 2 Rusting 3. Digestion 4. Buning PHYSICAL CHANGES 1. melting 2. Boiling water 3. Breaking glass 4 crushing a can Indicate the 5 Postulates to DALTON'S ATOMIC THEORY: All matter is made up of atoms. Atoms of the same element are identical. Atoms of different elements are different. Atoms of different elements can combine to form compounds. *Atoms cannot be created or destroyed. Complete the table below about the scientists that contributed to the understanding of the atom: Scientist Contribution to the Atom Experiment Image of the Atom Democritus (Ancient Greece) atom. Defined an Observations Ernest Rutherford (Early 1900's) Discovered Nudeus Gold Foil Experiment John Dalton (Early 1800's) Atomic Theory Idea of Protons observations of Chemical reactions. J.J. Thomson (Late 1800's) Discovered electrons Cathode Ray Tube Mendelev (Mid 1800's) Ist Periodic Table arranged by mass. X X Neils Bohr (Early 1900's) Model of Atom with All elections. X Gilbert Newton Lewis (Early 1900's) Structure of Atom with VALENCE electrons. X H Draw an atom and label the following; NUCLEUS, PROTON, NEUTRON, ELECTRON Electron e- Neutron Proton. PN -Nucleus Draw a block from the periodic table and indicate what each piece represents. 1 H Hydrogen 1.008. → Atomic # → Element Symbol → Element Name Avg. Atomic Mass Be able to explain the attributes of each of the subatomic particles: PROTONS Charge+/ Mass I amu Location Nucleus What it can affect for the atom-Identity and mass NEUTRONS Charge- 0 Massamu Location Nucleus What it can affect for the atom mass ELECTRONS Charge-1 Mass Location Electron cloud What it can affect for the atom- charge If an atom gains or loses PROTONS, the atom will become a New Element If an atom gains or loses NEUTRONS, the atom will become an Isotope If an atom gains or loses ELECTRONS, the atom will become a lon If it LOSES electrons, it has a POSITIVE charge We call this a cation (Name the following) Mg Magnesium ion H Hydrogen ion Ba Barium ion If it GAINS electrons, it has a NEGATIVE charge Anion We call this a (Name the following) N= Nitride CI Chloride lodide

Classification of Matter Definitions and Examples

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