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SI Units
Mass
Volume
Density
Safety
100
SI or Metric System
What is standard system of measurement used by scientist throughout the world?
100
Horizontal rows of the periodic table
What are the periods?
100
Name the three states of matter.
What is a solid, liquid and gas?
100
Electrons that are in the highest energy level of an atom
What is an atom's valence electron?
100
Name the parts of a balanced equation: Hydrogen + Oxygen YEILDS Water _____________ ______
What is reactant and product?
200
Meters
What is basic SI unit for length?
200
Vertical columns of the period table.
What is a group or family?
200
Particles closely locked in position and can only vibrate.
What is a solid?
200
Atom or group of atoms with an electric charge.
What is ion?
200
Chemical reaction where energy is absorbed. Example is baking soda and vinegar.
What is endothermic reaction?
300
Seconds
What is the SI unit for time?
300
The most elements of the periodic table are this type.
What are metals?
300
Particles loosley connected and can collide and move past one another.
What is liquid?
300
Chemical bond formed when 2 atoms share electrons. Example is water.
What is a covalent bond?
300
Chemcial reaction where enery is released. Example is fuel and oxygen in air plane.
What is exothermic?
400
Kelvin
What is the SI unit for temperature?
400
Letters that represent elements such as O, Fe, Cu.
What is chemical symbol?
400
Particles in liquid gain energy to move independently forming a gas.
What is vaporation?
400
Metal atoms combine in a regular patterns so that valence electrons are free to move from atom to atom.
What is metallic bond?
400
Tastes sour, reacts with metals and carbonates, and turns blue litmus paper red
What is an acid?
500
10
What is the number the SI or metric system is based on?
500
Physical properties such as luster, malleability, ductitlity, conductivity.
What are properties of metals?
500
Vaporization that takes place on surface of liquid. Example a shrinking puddle.
What is evaporation?
500
When ionic compounds form, the ions come together in a way that __________ out the charges on the ions.
What is balances or cancels?
500
On the pH scale from 0 to 14, 9 to 14 is considered _____
What is Base?