Atomic Structure
What is the smallest unit of matter?
Atoms
What is the atomic number of Hydrogen?
1
What is the name given to a group of two or more elements bonded together?
Compound
These are groups of atoms bonded together.
Molecules
This change does not create a new substance, just the same substance in a different form.
(Example: melting an ice cube)
Physical Change
This is a combination of two or more elements that have bonded together.
Compound
Solid, liquid, and gas are examples of these States of ....
Matter
Red
Name the subatomic particles
Protons, Neutrons, Electrons
What is the Atomic Number of Carbon?
6
Which of the following two examples is the compound?
Water (H2O) or Hydrogen (H2)?
Water (H2O)
Oxygen
This change results in a new substance forming.
Chemical Change
Tri is the prefix for what number in chemistry?
3
Example:
trisulfide
triathalon
triangle
tricycle
The prefix poly means ...
Many
Name the largest reef system on the planet
The Great Barrier Reef
What subatomic particle has a negative charge?
Electrons
Name a noble gas
Helium, Neon, Argon, Xenon, Krypton, Radon
How many atoms are there in the following compound:
Sulfuric Acid (H2SO4)
7
Hydrogen x 2
Sulfur x 1
Oxygen x 4
Is Methane (CH4):
a) A molecule and a compound
b) A molecule only
A) a molecule and a compound
- Bond of more than one atom (molecule)
- Contains more than one element (compound)
Melting chocolate and placing it into animal shaped moulds is an example of a ....
Physical change
Spectacles is an old fashioned way of referring to glasses. What is special about a monocle ?
It only has one lens
mono = one
This is the name given to the vertical columns in the Periodic Table
Groups
Which Australia animal is featured on the Australian Coast of Arms along with the emu?
Kangaroo
What subatomic particle has a positive charge?
Protons
Which element has 4 protons?
Beryllium
How many atoms in the following compound:
Aluminium oxide (Al2O3)
5
Aluminium x 2
Oxygen x 5
A diatomic molecule is one that only exists with how many atoms?
2
Burning wood on a campfire so that it combusts and turns into ash
This is a pure substance made entirely of atoms that all have the same number of protons
Element
Instead of writing the names of chemical compounds and molecules, you can simply show them using this ....
Example: Water is also known by its ............. which is H2O
Chemical formula
Name an Australian animal that is a mammal and lays eggs
Platypus or Echidna
(these are monotremes)
What is the overall charge of an atom?
(consider the subatomic particles)
Neutral
What category of elements includes: Chlorine, Fluorine, and Bromine?
Halogens
How many elements in the following compound:
Silver nitrate (AgNO3)
3
Silver, Nitrogen, Oxygen
O2 has two oxygen molecules bonded together. He is a single atom.
Dissolving magnesium in Hydrochloric acid so that Hydrogen gas is produced is what kind of change?
Chemical change
This is the term given to the number of protons found in the nucleus of an atom. It is also the number positioned above the element on the Periodic Table
Atomic Number
Reactants
Developed in Queensland, the Droughtmaster breed of cattle is popular in tropical areas. It is a cross between which two breeds?
Brahman (50%) and Shorthorn (50%)
What is the overall charge of the nucleus of an atom?
Positive
What element in located in Group 1, Period 3?
Sodium
How many elements in the following compound:
Ammonium nitrate (NH4NO3)
3
Nitrogen, Hydrogen, Oxygen
Why are all compounds examples of molecules but not all molecules are compounds?
Molecule is just more than one atom bonded together (could be the same element eg: H2, O2, F2)
Compounds must be formed from more than one element.
Boiling water so that it becomes vapour, then condensing this vapour through distillation is what kind of change?
Physical change.
Protons, Neutrons, and Electrons are examples of these
Subatomic particles
These are formed at the completion of a chemical reactions
Products
What is the name given to a uniquely Australian horse sport where a mounted rider must “cut out” one beast from a herd of cattle in an enclosure, block and control it, and then guide the animal through a set course around pegs in an arena?
Campdrafting