Unit 1 – Matter and Chemical Bonding Flashcard

What is a physical change?
-No Reaction
-Change in State
Ex. Coffee beans are crushed
What is a chemical change?
-Reactions
-‘Something new is formed’
Ex. Burning of leaves
What is Qualitative?
-No Numbers involved
Ex. Bob is tall
What is Quantitative?
-Numbers are involved
Ex. Bob is 6 feet tall
Name at least 5 physical properties?
-State
-Color
-Volatile
-Lustre
-Malleability
-Viscosity
-Ductility
-Texture
-Hardness
-Density
-Combustability
-Clarity
-Conductivity
-Cohesion/Adhesion
-Melting/Boiling point
-Solubility (ex.In water or whatever substance)
Name at least 3 chemical properties?
-Unknown Color Change
-Light
-Heat
-New gas or solid is formed/New something is formed
Wood burnt to ashes. Physical or chemical property?
Chemical
Sodium is a soft metal. Physical or chemical property?
Physical
Hydrogen is a colourless gas. Physical or chemical property?
Physical
Gold does not tarnish. Physical or chemical property?
Chemical
John is 7 feet tall. Qualitative or quantitative?
Quantitative
Potassium floats on water, but reacts vigorously with the water. Qualitative or quantitative?
Qualitative
Boiling point of water is 100 degrees celsius. Qualitative or quantitative?
Quantitative
Nitrogen is a colourless gas at room temperature. Qualitative or quantitative?
Qualitative
Addition of flour and water. Physical or chemical change?
Physical
Formation of dew. Physical or chemical change?
Physical
Rotting of food. Physical or chemical change?
Chemical
Explosion of a fire cracker. Physical or chemical change?
Chemical
What is a pure (substance)?
-Has 1 type of particle
-Element and Compound
-Opposite from a mixture
What is a mixture?
-Has 1 type of particle
-Heterogeneous(Mechanical mixture)
-Homogeneous(Solution)
What is a heterogeneous mixture?
-Also called a mechanical mixture
-2 or more phases
-Can be separated
Ex. Rock in water, oil and water
What is a homogeneous mixture?
-Also called a solution
-1 phase
-Can’t be separated (difficult/ impossible to do)
Ex. Air, apple juice, steel
Element
-On the periodic table
-1 thing
Ex. Hydrogen (H)
Compound
-Elements bonded together/multiple things off the PERIODIC TABLE that are bonded together
-Multiple things
Ex. Water (H2O)
What is a property?
Used to describe matter and its interactions with other matter
Milk. Homogeneous or heterogeneous mixture or pure substance?
Heterogeneous
Sand and water. Homogeneous or heterogeneous mixture or pure substance?
Heterogeneous
Clean air. Homogeneous or heterogeneous mixture or pure substance?
Homogeneous
Aspirin. Homogeneous or heterogeneous mixture or pure substance?
Homogeneous
Vinegar. Homogeneous or heterogeneous mixture or pure substance?
Homogeneous
Raisin Bran. Mechanical mixture or solution or pure substance?
Mechanical mixture
House paint. Mechanical mixture or solution or pure substance?
Mechanical mixture
Clear tea. Mechanical mixture or solution or pure substance?
Solution
Clear honey. Mechanical mixture or solution or pure substance?
Solution
Oxygen. Mechanical mixture or solution or pure substance?
Pure substance
Sulphur. Mechanical mixture or solution or pure substance?
Pure substance
Gold. Mechanical mixture or solution or pure substance?
Pure substance
[image]

-Atomic Number(p+ ; e) -; Very top left

-Atomic Mass(p+-no) -; Very top right

-Electronegativity -; Under atomic number/middle left

What is are isotopes?
When the same element has different mass’
In Fluorine (F) determine how many electrons, protons, and neutrons it’s atom contains.
Electrons = 9
Protons = 9
Neutrons = 10
What is a period?
Horizontal rows
same number of orbits
What is a family/group?
Vertical columns
same number of valence electrons
similar properties
What are valence electrons?
Electrons in the outermost shell
What is an atomic radius?
A measure of size: the bigger the period number, the bigger the atomic radius. If its in the same period, then the more protons, the smaller the radius.
OR
-Lowest ionization to the left-bottom of the periodic table
-Highest ionization to the top-right of the P.T.
What is ionization energy?
The energy to remove an electron
-Lowest ionization to the left-bottom of the periodic table
-Highest ionization to the top-right of the P.T.
What is electron affinity?
Energy released when electron is gained
Indicate the order of groups and families from left to right of the periodic table.
1. Alkali Metals
2.Alkali earth metals
3. Transition metals
4. Halogens
5. Noble Gases
Electronegativity. 0 – 0.69. Polar Covalent, covalent, or Ionic?
Covalent
Electronegativity. 0.7 – 1.69. Polar Covalent, covalent, or Ionic?
Polar Covalent
Electronegativity. 1.7 and up. Polar Covalent, covalent, or Ionic?
Ionic

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