Elements
This is the lightest element in the periodic table.
What is hydrogen?
This trend decreases as you move down a group and increases across a period.
What is electronegativity?
The type of reaction represented by A+B→AB
What is synthesis?
The pH of a neutral solution.
What is 7?
This scientist created the first periodic table.
Who is Dmitri Mendeleev?
The only metal that is liquid at room temperature.
What is mercury?
The atomic radius of an element does this as you move down a group.
What is increase?
This is the name for a reaction that absorbs heat.
What is endothermic?
This is the name for a substance that donates protons in a reaction.
What is an acid?
This chemist is known as the father of modern chemistry.
Who is Antoine Lavoisier?
This element is used in balloons because it is less dense than air.
What is helium?
The number of valence electrons in group 16 elements.
What is six?
The solid that forms in a double displacement reaction.
What is a precipitate?
The name of the scale used to measure acidity or basicity.
What is the pH scale?
This chemist discovered radium and polonium.
Who is Marie Curie?
This element is the most abundant in the Earth's crust.
What is oxygen?
This element has the highest first ionization energy.
What is helium?
The products of the combustion of a hydrocarbon.
What are carbon dioxide and water?
This is the ion that makes a solution acidic.
What is the hydrogen ion (H+^)?
This scientist developed the planetary model of the atom.
Who is Niels Bohr?
The element with the symbol "W."
What is tungsten?
The tendency of an atom to attract electrons in a bond.
What is electronegativity?
The type of reaction in which one element replaces another in a compound.
What is a single displacement reaction?
The conjugate base of HCl.
What is Cl−^?
This chemist’s principle states that mass is neither created nor destroyed in a chemical reaction.
What is the law of conservation of mass by Antoine Lavoisier?