Matter & Phase Changes
This state of matter has definite shape and definite volume.
What is a solid?
This subatomic particle has a negitive charge.
What is an electron?
These are the electrons in the outer energy level.
What are valence electrons?
This bond forms between a metal and a nonmetal.
What is a covalent bond?
This is the number of hydrogen atoms in H₂O?
What is 2?
This phase change is liquid → gas.
What is evaporation?
The atomic number tells you the number of these in an atom.
What are protons?
Group 17 elements have this many valence electrons.
What is 7?
This type of bond involves sharing electrons.
What is a covalent bond?
This is the number of oxygen atoms in 3CO₂?
What is 6?
This phase change is solid → liquid.
What is melting?
This is the number of neutrons in Oxygen-16 (atomic number 8).
What is 8?
If an atom has more electrons than protons, it has this type of charge.
What is negative?
Electrons are this during ionic bonds.
What is transferred?
This is the number of chlorine atoms in 4CaCl₂?
What is 8?
This phase change is solid → gas.
What is sublimation?
An atom has 12 protons and 12 electrons. Its charge is this.
What is neutral?
Group 1 elements tend to lose this many electrons when bonding.
What is 1?
This is why CO₂ forms this type of bond.
What is covalent because it is nonmetal + nonmetal?
This is the total number of atoms in Al₂O₃?
What is 5?
This is what happens to particle motion when a substance changes from liquid to gas.
What is particles move faster and spread farther apart?
An atom has 15 protons and a mass number of 31.
This is the number of neutrons.
What is 16?
This explains why Group 18 elements rarely react.
What is they have a full outer energy level (8 valence electrons) and are already stable?
This explains why NaCl forms an ionic bond using valence electrons.
What is sodium loses 1 valence electron and chlorine gains 1, forming oppositely charged particles that attract?
This is the total atoms in 2 molecules of Al₂O₃?
What is 10?