Atomic Theory
Which atomic particle has no charge?
Neutron
How are the atoms arranged in the modern Periodic Table?
By increasing atomic number
How many valence electrons does Ar have?
8
When do atoms form a covalent bond?
When they share electrons
What is one characteristic of a base?
Feels slippery
Write an example of an isotope using Chlorine-35
Chlorine-35, Chlorine-37
Who organized the elements into the modern periodic table?
Mendeleev
Elements of the same group have the same...
number of valence electrons
Most atoms gain, lose, or share electrons to end up with how many valence electrons?
8
Which is most likely to be damaged by an acid?
Glass jar, plastic bottle, gold bracelet, aluminum can
An aluminum can
What is one statement from Dalton's Atomic Theory?
Refer to pg. 106
Which elements are most similar?
Si and P
Ne and S
K and Mg
Cl and I
Cl and I
Why do metals have high conductivity?
When a molecule has slight positive and negative charges at different locations, the molecule is
polar
The products or a neutralization reaction are ______ and ___________.
water and salt
Rutherford predicted that an atom has a dense core called a
Nucleus
Scientists learn about the properties of some particles from the collisions that occur inside a
particle accelerator
One property of metalloids not shared with metals or nonmetals is that metalloids are
semiconductors
draw an electron dot diagram of Sn
Drawing should have 4 valence electrons
What should you NOT do to identify something as an acid or base?
Taste, touch
Sketch a modern diagram of an atom and label each atomic particle with it's name and charge.
Answer must have electron cloud (-), Nucleus containing protons (+), and neutrons (no charge)
Which element in Period 5 has 6 valence electrons?
Te, Tellurium
An element with low density, low conductivity, dull appearance, low malleability, and low ductility would be identified as what?
nonmetal
In the ionization of K and F, which element will lose an electron and which element will gain an electron?
K will lose it's one valence electron and F will gain the electron, being complete with 8.
What is an example from the book of a natural indicator?
Litmus paper
Hydrangea