Atomic Structure
Periodic Trends
Bonding & Formulas
Reactions
Thermodynamics
100

What is the name for the number of protons in an atom?

Atomic number

100

What is the name for the trend of atomic radius across a period?

Decreases

100

What is the name for a representation of elements in a compound?

Chemical formula

100

What is the name of the law stating that matter is conserved?

Law of conservation of mass

100

What is the name for the heat absorbed by a system?

Endothermic

200

What is the name for the atoms of the same element with different neutrons?

Isotopes

200

What is the name for the attraction an atom has for electrons?

Electronegativity

200

What is the name for the type of bond where electrons are shared?

Covalent bonding

200

What is the name for the process of making both sides of an equation equal?

Balancing equations

200

What is the name for the heat released by a system?

Exothermic

300

What is the name for the total number of protons and neutrons?

What is the mass number?

300

What is the name for the energy required to remove an electron?

Ionization energy

300

What is the name for the type of bond where electrons are transferred?

Ionic bonding

300

What is the name for the reaction where two substances combine?

Synthesis

300

What is the name for the minimum energy needed for a reaction?

Activation energy

400

What is the name for the for an unstable nucleus losing energy over time?

Nuclear decay?

400

What is the name for the energy required to remove an electron?

Shielding effect

400

What is the name for the electrons in the outermost shell?

Valence electrons

400

What is the name for the reaction where one element replaces another?

Single replacement

400

What is the name for the graph showing energy changes as a substance heats?

Heating curve

500

What is the name for the model that describes electrons in probability clouds?

Quantum mechanical model

500

Why do atoms get smaller across a period?

Increased nuclear charge pulls electrons closer
500

What is the name for the shape of a molecule with 4 bonding pairs

Terahedral

500

Why do atoms bond?

They do it to achieve stability or create a full valence shell

500

What is the name for the measure of disorder in a system?

Entropy