Atomic Structure
What is the particle that makes EVERYTHING up?
Atom
What is the Atomic Number for the element Copper (Cu)?
Don't spill chlorine bleach on your clothes, it will cause this sign of a chemical reaction...
If my reactants have a mass of 40 grams, then how much do my products weigh?
40 grams
What type of charge does a Neutron have?
Neutral
How many electrons does the Element Magnesium (Mg) have?
12
When dropping an Alka-Seltzer tablet into water it fizzes and bubbles, a pure sign of the formation of...
Gas Formation
If Na + Cl react to create NaCl, which part of the equation are the reactants and which are the products?
Sodium + Chloride (Na+Cl) = reactants
Sodium Chloride = product.
Name the very outside electrons that are on the last electron shell
Valence Electron
How many Neutrons does the element Xenon have?
77
Chunks that form in spoiled milk are an example of ___ (another sign of a chemical reaction)
Solid Formation
If 55 grams of Magnesium and 120 grams of Oxygen react, what is the mass of their product?
175 grams
Name the three parts of an atom and their charges
Protons (positively charged), Neutrons (no charges) and Electrons (negatively charged)
Elements in the same group share this.
The same number of valence electrons
Most combustion (burning) reactions have both of these as a sign of the reaction.
light and heat
When balancing equations what numbers do we NEVER change?
The subscripts
What is an ion?
An atom that has a positive or negative charge
Which group contains the elements Li, Na, K, Rb, Cs and Fr.
The Alkali Metals
This is a solid produced as a result of a chemical reaction in solution.
Precipitate
Balance the equation:
Al +CuSO4 —> Al2(SO4)3 +Cu
2Al + 3CuSO4 —> Al2(SO4)3 + 3Cu?