Atoms and Elements
The 3 subatomic particles
What are protons, neutrons, electrons?
What the reactivity of an element depends on.
What are its atom's number of valence electrons?
The only number type that can be changed to balance an equation.
What is a coefficient?
The yeast in the Elephant Toothpaste experiment served as this.
What is a catalyst?
The electric charge of an electron.
What is negative?
The 2 subatomic particles contained in an atom's nucleus.
What are protons and neutrons?
The bond type in which one atom gives up an electron and the other receives it.
What is an Ionic Bond?
When an element appearing more than once on either side of an equation should be balanced.
What is last?
Is color change indicative of a chemical or physical change?
What is a chemical change?
Energy is released in this type of chemical reaction.
What is an exothermic reaction?
The atomic number of an element is equal to this.
What is the number of protons?
A positively charged atom.
What is a cation?
A molecular group that appears on both sides of a chemical equation is called this.
What is a polyatomic group?
Is change of state of matter a chemical or physical change?
What is a physical change?
An ice pack is an example of this type of chemical reaction.
What is an endothermic reaction?
The name of the shell (orbital) that contains the electrons involved with bonding.
What is the valence shell?
The small number after an element in a molecule.
What is a subscript?
The balanced form of this equation: H2 + O2 yields H2O
What is 2H2 + O2 yields 2H2O?
In the equation Ca(OH)2 + CO2 yields CaCO3 + H2O, the Calcium Hydroxide and Carbon Dioxide are called this.
What are reactants?
A solid substance that settles out in a solution after a chemical reaction.
What is a precipitate?
Group 18 of the periodic table of elements. These are the least reactive elements.
What are Noble Gases?
The type of chemical bonds holding a water molecule together.
What are covalent bonds?
The balanced form of this equation:
H2SO4 + KOH yields K2SO4 + H2O
What is H2SO4 + 2KOH yields K2SO4 + 2H2O?
States that matter can neither be created nor destroyed.
What is the Law of Conservation of Mass?
The chemical name for water.
What is dihydrogen oxide?