Matter
Pure Substances & Mixtures
Dalton proposed that all matter is made of tiny particles called...
atoms
What are the three subatomic particles?
Protons, Neutrons, Electrons
Horizontal Rows are called
Periods
Elements with this property can be pounded into sheets
Malleability
Milk would be classified as a ....
Homogenous mixture
JJ Thomson's model of the atom could be described as...
Plum Pudding / Chocolate Chip Cookie / Blueberry Muffin
Atomic number tells us the number of...
Vertical coloumns are called
Elements with this property can be pulled into thin wires
ductility
What state of matter has no fixed shape or volume?
Gas
Neils Bohr discovered that electrons exist in....
energy levels/shells
Atomic Mass
Very non-reactive non-metals
Noble Gases
The amount of mass in a certain volume of a substance
density
When heat energy is added to matter, what happens to the particle attraction?
It decreases
Protons and neutrons are located in the...
nucleus
If an atom loses/gains electrons, it is called
Ion
Reactive metals, will burn in oxygen and water if heated
Alkaline Earth Metals
Measures how easily electricity or heat moves through a sample.
Conductivity
When a change of phase is happening, what happens to the temperature?
It stays the same
When Rutherford performed this experiment, he discovered that most of the atom is empty space, with a positively charged nucleus in the center.
Gold Foil Experiment
How many electrons would the ion Mg2+ have?
10
What happens to atomic radius as you go down a family on the periodic table?
These elements are usually shiny, ductile, malleable, magnetic, and conduct heat and electricity.
Metals