Atomic Dead Guys
This Greek philosopher was the first to suggest that matter was made of invisible, indivisible particles called "atomos."
Who is Democritus
The correct chemical name for MgCl2
What is magnesium chloride?
The correct chemical formula for lithium oxide.
What is Li2O?
Water boiling on a stove to produce steam is an example of this type of change.
What is a physical change?
A substance made of only one type of atom that cannot be broken down by chemical means, such as tungsten (W)
What is an element
This scientist proposed the first modern atomic theory, stating that atoms of the same element are identical and combine in fixed ratios.
Who is John Dalton?
The correct chemical name for PCl3
What is phosphorus trichloride?
The correct chemical formula for carbon dioxide.
What is CO2?
Gasoline combusting in a car engine to produce heat and energy is this type of change.
What is a chemical change?
Pure table salt NaCl is classified as this type of pure substance.
What is a compound
He used cathode ray tubes to discover the electron and proposed the "Plum Pudding" model of the atom.
Who is J.J. Thomson?
The correct chemical name for K2SO4
What is potassium sulfate?
The correct chemical formula for sodium nitrate.
What is NaNO3?
A property like mass, length, or volume that depends directly on the amount of matter present.
What is an extensive property?
A bowl of chicken noodle soup is an example of this type of mixture.
What is a heterogenous mixture?
His Gold Foil Experiment proved that the atom consists mostly of empty space with a dense, positively charged nucleus.
Who is Ernest Rutherford?
The correct chemical name for FeO
What is iron(II) oxide?
The correct chemical formula for copper(II) chloride.
What is CuCl2?
A property like boiling point, density, or color that depends only on the identity of the substance, not the amount.
What is an intensive property?
White Elmer's glue or a saltwater solution, which appears uniform throughout, is this type of mixture.
What is a homogeneous mixture?
He developed the planetary model of the atom, placing electrons into specific, quantized energy levels orbiting the nucleus.
Who is Niels Bohr?
The correct chemical name for HF
What is hydrofluoric acid?
The correct chemical formula for sulfuric acid.
What is H2SO4?
Two clear liquids are mixed in a beaker, and a solid white powder settles to the bottom. This type of change has occurred.
What is a chemical change?
Elements located along the "staircase" of the periodic table that share properties of both metals and nonmetals.
What are metalloids?