Elements, Compounds And Mixtures Flashcards
What is Oxygen’s Chemical Symbol, State, Atomic Number and is it a Non-Metal or Metal or Metalloid?
Chemical Symbol: O | State: Gas. | Atomic Number: 8. | Non-Metal.
What is Helium’s Chemical Symbol, State, Atomic Number and is it a Non-Metal or Metal or Metalloid?
Chemical Symbol: H. | State: Gas. | Atomic Number: 2. | Non-Metal.
What is Carbon’s Chemical Symbol, State, Atomic Number and is it a Non-Metal or Metal or Metalloid?
Chemical Symbol: C. | State: Gas. | Atomic Number: 6. | Non-Metal.
What is Beryllium’s Chemical Symbol, State, Atomic Number and is it a Non-Metal or Metal or Metalloid?
Chemical Symbol: Be. | State: Solid. | Atomic Number: 4. | Metal.
What is Calcium’s Chemical Symbol, State, Atomic Number and is it a Non-Metal or Metal or Metalloid?
Chemical Symbol: Ca | State: Can be Liquid and Solid | Atomic Number: 20. | Metal
Identify some of the dangers associated with some of the chemicals elements.
Sodium and potassium become very hot when in contact with water.
Model a structure of an atom and describe it’s characteristics of the three main particles.
- Protons carry a positive charge. 2. Neutrons carry no electric charge. 3. Electrons carry a negative charge.
Protons and Neutrons make the Nucleus.
Recall that each chemical element is identified with a unique what number which is equal to the number of what in it’s what?
Each chemical element is identified with a unique atomic number which is equal to the number of protons in it’s nucleus.
What is a metal?
Metals are a group in the Periodic table that are good conductors of electricity and thermal energy (heat). They can shaped by pressure (malleable) and be polished to shine. They take on a solid form in room temperature.
What is a non-metal?
Non-metals are a group that are opposites of Metals. They’re poor conductors in electricity and thermal electricity. They also cannot be shaped by pressure, or anything since they take on the form of liquids and gases. They can melt in room-temperature and are brittle.
What is a metalloid?
A metalloid is a group of elements in the Periodic table where they have similar properties of the Metal and Non-Metals. It is a semi-metal. An example of a metalloid is Silicon, it is a semi-conductor.
What is an element?
An element is only one atom that can’t be broken down any further, chemically or physically. They’re distinguished by atomic numbers/ number of protons.
What is a compound?
A compound are two atoms or different elements that are bonded tightly together and can only be separated chemically, not physically, so it can be broken down into a simpler type of matter. The properties of compounds are different from the elements that they’re made from.
What is a mixture?
A mixture is two or more different elements and/or compounds mixed physically together. Can be separated physically and often retains many of the component’s properties.
Model the arrangement of atoms in the molecules of some compounds.
Examples: OO (O2) = Oxygen | HHO (H2O) = Hydrogen
