Atoms
Name the three particles in an atom
Proton, neutron, electron
Are elements a pure substance? (Yes/No)
Yes
Are compounds a pure substance? (Yes/No)
Yes
Are mixtures a pure substance? (Yes/No)
No
Give a definition of "horseplay".
Playing or mucking around inappropriately, often including hitting, running or other physical actions.
Which particles are in the nucleus of the atom?
Protons and neutrons
How many elements are on the periodic table?
118
Can compounds be physically separated? (Yes/No)
No
Name a sign of chemical change:
One of: fizzing/bubbling, smell/aroma, temperature change, colour change, removal or addition of a substance
What is the name of the phase change when a solid becomes a liquid?
Melting
Which particle has a positive (+) charge?
Proton
Which element has the symbol 'O'?
Oxygen
When 1 Oxygen atom and 2 Hydrogen atoms chemically bond/join, what compound is created?
H2O (Water)
What is the better conductor of electricity; sulfur (yellow, chalk-like substance) or iron (shiny, used for nails)?
Iron (Fe)
What is the definition of "hypothesis"?
A prediction/guess for the outcome of an experiment
The atomic number tells us what information about an element?
How many protons it has
What is the chemical symbol for sodium?
Na
What elements make up Ammonia (NH3)?
1 Nitrogen and 3 Hydrogen atoms
Are two atoms chemically bonded together called; monatomic, molecule, or lattice?
Molecule
What happens to the movement of particles when a substance is heated
They move faster and further apart (changing solids into liquids, and liquids into gases)
The ancient Greek word "atomos" means what?
"Uncuttable" or "indivisible"
What is the lightest element on the periodic table?
Hydrogen (it's atomic mass/weight is only 1.00794)
What elements make up Carbon Monoxide?
(The clue is in the name of the compound)
Carbon and Oxygen (CO)
At room temperature, is H2O a solid, liquid or gas?
Liquid (water)
Name a technique for separating a mixture of salt water.
Evaporation (turns the water into a gas, leaving the salt behind)