Atomic Theory
What is the charge of a neutron?
No charge (neutral)
This type of electromagnetic wave has the longest wavelength and is commonly used for broadcasting radio signals
Radio waves
True or False: Hydrogen bonding is stronger than a covalent bond
True
This is the name of a horizontal row on the Periodic Table
A period
True or False: In case of a chemical spill on your skin, you should immediately wash the affected area with plenty of water
True
Where can electrons be found?
Moving rapidly outside the nucleus
These electromagnetic waves are visible to the human eye
What is visible light?
What is the strongest type of intermolecular force?
Hydrogen bonding
True or False: Elements in the same group of the periodic table have similar chemical properties
True
Which law demonstrates the idea that "matter cannot be created nor destroyed"?
Law of Conservation of Mass
According to Bohr's atomic model, electrons move in:
Fixed energy levels
What determines the frequency of an electromagnetic wave?
The energy of the wave source
Which force is responsible for holding water molecules together?
Hydrogen bonding
Elements that have properties of both metals and nonmetals are called this:
Metalloids
Where does nuclear fusion naturally occur?
In the sun and other stars
This scientist proposed that atoms are indivisible solid spheres and called them "atomos"
Democritus
These waves have the shortest wavelengths and the highest energy in the EM spectrum
What are gamma rays?
What type of bond is present in NaCl (table salt)
Hint: Na = metal; Cl = nonmetal
Ionic bond
This is the name of the energy required to remove an electron from an atom
Ionization energy
Which type of radiation has the LEAST penetrating power: alpha, beta, or gamma?
Alpha particles
Rutherford showed that atoms have a small, dense, positively charged center. What is this called?
A nucleus
This part of the EM spectrum is responsible for causing sunburns
What is ultraviolent (UV) radiation?
Which type of chemical bond requires the transfer of electrons between atoms?
Ionic bonds
As you move down a group in the periodic table, what happens to the electronegativity of the elements?
Decreases
What is the proper way to dispose of broken glass in the lab?
Wrap it in paper towels and place it in the designated broken glass container