Intro to Chemistry
Lab Safety
Atomic Structure
Electrons
Periodic Table
Periodic Trends
200
In this phase, a substance has a definite volume, indefinite shape, nearly incompressible, with close-packed molecules that can flow freely
What is a LIQUID?
200
Make sure these are on your head whenever you enter an active laboratory
What are SAFETY GOGGLES?
200
The smallest stable form of matter
What is the ATOM?
200
Electrons located on the outermost shell of an electron cloud are called these
What are VALENCE ELECTRONS?
200
Dr. Mendeleev created the first Periodic Table based on this
What is ATOMIC MASS?
200
periodic trend refers to the energy required to remove an electron from an atom
What is ELECTRONEGATIVITY?
400
This is a change that allows a substance to go from one phase to another phase and back to its original phase.
What is a PHYSICAL CHANGE?
400
These items are forbidden in a lab no matter how hungry or thirst you may get.
What are FOOD AND DRINKS?
400
This subatomic particle is located in the nucleus and does not have a charge
What is a NEUTRON?
400
The element this electron configuration represents:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p3
What is ARSENIC?
400
The current form of the periodic table was first developed in 1913 by Dr. Moseley and is based on this
What is ATOMIC NUMBER?
400
the trend in the electronegativity of the elements as you move from top to bottom within a group in the periodic table
What is DECREASING?
600
It is the measure of the average kinetic energy of the particles of a substance
What is the TEMPERATURE?
600
This is done so you actually have the same hair when you enter the lab as when you leave the lab.
What is TIE YOUR HAIR BACK?
600
This subatomic particle virtually has no mass and is located outside of the nucleus
What is an ELECTRON?
600
An atom is called this when it has gained or lost electrons from its neutral state
What is an ION?
600
These type of elements touch the stairstep line in the periodic table and have properties of the two other types of elements
What are METALLOIDS?
600
the distance from nucleus of an atom to the edge of its electron cloud
What is ATOMIC RADIUS?
800
You are said to have good this when you are able to repeat a measurement repeatedly
What is PRECISION?
800
This symbol represents chemicals that can cause a lot of damage even in low and very low quantities.
What is TOXIC?
800
The atomic number ALWAYS represents the number of this subatomic particle
What is the PROTON?
800
This group of elements are know for having a full, outer electron shell
What are the NOBLE GASES?
800
This group on the periodic table are highly reactive non-metals with 7 valence electrons and typically found as salts in nature. Also the only group to have a solid, liquid, and gas at room temperature.
What are HALOGENS?
800
the tendency of an atom to lose electrons and participate in chemical reactions or form bonds
What is METAL ACTIVITY?
1000
Two objects are in this state when two objects of different temperature, in contact, eventually reach the same temperature
What is THERMAL EQUILIBRIUM?
1000
Placing glass with an extreme temperature in contact with other substance of opposite temperature will cause this to happen.
What is CRACK or SHATTER?
1000
These two subatomic particles basically make the mass of an atom. Added together, they create the mass number.
What are PROTONS and NEUTRONS?
1000
The noble gas electron configuration for Co
What is [Ar]4s23d7?
1000
These two elements are the only elements on the periodic table that are liquids at room temperature.
What are BROMINE and MERCURY?
1000
the largest atomic radius among Argon, Barium, Lithium, Beryllium or Cesium
What is CESIUM?