Properties and changes
An observable characteristic that does not change the substance
What is a physical property?
The way to categorize matter based on its composition
What is classification of matter?
Smallest unit of matter "building blocks" of matter
What is an atom?
The purest an item can be after it can't be purified any further
What is an element?
The vertical column in a periodic table
What is a group?
Some observations that can be made are heat, light and a change in odor
Chemical Change
Placing different types of metals together in a blast furnace to melt them and mix them together in a uniform appearance results in a ________ mixture
Homogeneous
The first two subatomic particles are found to have mass where as the third has no mass
Protons, neutrons and electrons
Protons and electrons for a neutral atom are found by looking at this
Atomic number
The horizontal rows in the periodic table
What is a period?
When you have mound of sand and you get it wet to make a cube, this is an example of _______ change
Physical
Anything that has mass and takes up space
What is matter?
A uniform composition throughout of one type of atom
What is an element?
Usually found abundantly in nature and something that we use to associate wealth and affection(love) in the form of a rock
What is carbon?
The thing that organizes the elements in a certain repeating pattern in a way that all people can recognize
What is a periodic table?
A type of characteristic that is observed through a reaction of sorts that does not allow the starting material to return to its original state
What is a chemical property?
A substance that looks uniform throughout and is made up of a repeating structure at the molecular level
What is a pure substance?
This is found by taking the mass of the protons and adding it to the mass of the neutrons
A precious type of metal used in electronics, many have sought this rank out in games as well
What is platinum?
What are the alkali metals?
The overall change in this scenario: An ice cube put into a flask and heated to get to liquid form then has electricity ran through the water to form two gases, one is ignited and makes a pop sound
This is the level that cannot be seen by the naked eye, but at higher level of zoom achieved using specialized equipment
What is the molecular level?
This is the depiction that is more readily used to help explain the excitation of electrons and came before the quantum model
What is a Bohr Model?
It is a metal, located in the transition metal family mainly used in catalytic converters, dental fillings and fun fact, it is the metal that Tony Stark was looking for in his rockets when building his first arc reactor. It is valued at ~$1,000/oz.
What is palladium?
The group of elements that are reactive and tend to make negative ions in group 17
What are halogens?