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Chemistry Test

QuestionAnswer
atomic number The number of protons in an atom
symbol The letters that represent an element. The first letter is always capital. If there is a second letter it is a lower case.
element name The name of the element
atomic mass the weight of the protons and neutrons because they are big and so that means they are heavy
oribital These are the energy levels or rings around the atoms where you can find electrons
electrons negatively charged, found in the energy levels, very tiny, move fast
nuetrons found in the nucleus of the atom
protons positive charge
Alkali Metals Group 1, very reactive, give away one electron
Alkaline Earth Metals Group 2, second most reactive, give away two electrons
Transition Metals Group 3-12, Good Conductors of heat and electricity
Lanthanide Series Period 6 at the bottom of the table
Actinide Series Period 7 at the bottom of the table
Nobel Gases Not reactive, they have 8 valence electrons already and do not like to combine. They are stable
Mixed Group metals Group 13-16 This group includes metals, metalloids, and non metals.
Physical Change Atoms do not rearrange. Examples include, color change, odor, taste, density, mass, hardness, boiling point, melting point
Chemical Change/Reacion Atoms rearrange, a different substance is produced, Energy is required
Reactants The left side of the equation
Products The right side of the equation
Compound Two or more elements
Molecule Two or more elements. All compounds are molecules but not all molecules are compounds
Law of Conservation of Matter Atoms are not created or destroyed only rearranged during a chemical reaction
Endothermic absorbs energy and the reaction feels cold
Exothermic releases energy and the reaction feels hot
The periodic table is arranged by______________? Atomic number
How many electrons fit on the first energy level 2
How many electrons fit on the second energy level 8
How many electrons fit on the third energy level 8-32
Name three chemical reactions Gas production, temperature change, color change reaction
Name the three parts of an atom protons neutrons and electrons
The electrical charge for a proton positive
The electrical charge for a nuetron neutral
The electrical charge for an electron negative
Where are the protons and neutrons found in the nucleus
Where are the electrons located energy levels, orbitals, shells
How do you calculate neutrons? Subtract the atomic mass - the atomic number
How do you know how many electrons in an atom Its the same as the number of protons or the atomic number
Is the atomic mass a decimal number or a whole number decimal number
The name of HCl Hydrogen Cloride
Why is carbon important it has 4 valance electrons It can bond in many ways like rings, branches, and linearly
Carbohydrates they are energy
Lipids they are fats
Proteins They are meats
DNA/RNA Genetic make up
Created by: uclabruin03
 

 



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