Atomic Structure
What is the particle that makes EVERYTHING up?
Atom
What is the Atomic Number for the element Strontium
38
Elements in the same group have similar chemical and physical properties.
What is True.
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?
Neutal
How many electrons does the Element Oxygen have?
8
What is the difference between a physical property and a chemical property.
You can observe a physical property without changing the substance, chemical property can only be observed when it is changing.
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
What is the following, a physical property or chemical property? Ability to burn
Chemical property.
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
Protons, Neutrons and Electrons
Elements in the same group share this.
The same number of valence electrons
The majority of the elements on the periodic table are this.
What are metals, which are found on the left side of the periodic table.
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
Elements in group 1 have only 1 valence electron and are considered this.
What are elements that are considered extremely reactive?
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?