Elements
Periodic Table
Equations
Reactions
Misc.
100
Dull and poor conductors of thermal energy
What are non-metals
100
The dark line in the periodic table.
What is the zig zag line
100
A shorthand description of a chemical reactions
What is a chemical equation
100
These are always to the right of the arrow in an equation
What are products.
100
These are the smallest particle into which an element can be divided.
What are atoms.
200
Another name for the noble gases
What are inert gases
200
These are found on the left side of the periodic table
What are metals
200
A chemical equation uses these two things.
What are formulas and symbols.
200
The definition of reactants
What are the starting materials in a chemical reaction.
200
Define a molecule
What is a neutral group of atoms held together by covalent bonds.
300
Two or more elements that are chemically combined
What are compounds.
300
The group number of the noble gases.
What is 18
300
The law of conservation of matter states this.
What is that mass is neither created nor destroyed in ordinary chemical and physical changes.
300
Energy is released or removed in this reaction.
What is exothermic.
300
Most metals and water are an example of this.
What are conductors of electricity.
400
Elements that have properties of both metals and non-metals
What are metalloids
400
Something that distinguishes the noble gases from all other elements
What is their electron shells are full with 8 electrons.
400
Equations must have these two items in order to be balanced.
What are reactants and products.
400
Vinegar and baking soda form this type of reaction. (Exothermic or Endothermic)
What is Endothermic.
400
The number of protons in the nucleus is the same number of this.
What is the atomic number.
500
Elements that are good conductors of electricity
What are metals
500
Non metals are poor conductors of these two things
What are thermal energy and electrical currents.
500
Balance the following equation: (all numbers are subscripts not coefficients) C2H6 + O2 ------> H2O + CO2
What is: 2 C2H6 + 7 O2 -------------> 6 H2O + 4 CO2
500
Ice is added to water. What type of reaction is this? (physical or chemical and exothermic or endothermic)
What is physical and endothermic. This is an endothermic reaction, because the system - the ice and water - are absorbing heat.
500
In the two laws that we learned, this is what they have in common.
What is that neither one can be created nor destroyed.
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