Science
Atom
Smallest Unit of matter retaining element properties.
Isotope
Atoms with the same protons but different neutrons. (another version of something)
Covalent bond
When an electron from each atom is attracted to the protons of the other atoms.
What subatomic particles give an atom mass?
Protons and Neutrons give an atom mass. I know this because it is located in the center of the nucleus. It provides most of the atoms with electrons contributing negligibly because they are much lighter, each being about 1/2000th the mass of a proton or neutron. The combined count of protons and neutrons determines an atom's mass number. This is why Protons and Neutrons give an atom mass.
What is the mass number of an atom with 5 protons and 7 neutrons?
12
Atomic Number
Number of protons in the nucleus
Sum of protons and neutrons in an atom
Hydrogen Bond
Weak bond formed when opposite charges attract
Which subatomic particles determines ionization?
Electrons are the subatomic particles that determine ionization. I know this because ionization is the process of an atom gaining or losing these negatively charged particles, creating a charged ion. While protons define the element, it's the electron's movement gaining or losing them—that changes the atom's charge, influencing chemical behavior and forming ions. This is why electrons are the subatomic particles that determine ionization.
How many electrons are in O2- ?
16
Electron
Negatively charged particle outside of the nucleus
Neutron
Particle found with no charge in the nucleus
Solubility
A substances ability to dissolve in another substance
What are the stable isotopes of:
Carbon
Nitrogen
Oxygen
Carbon 12-13
Nitrogen 14-15
Oxygen 14-15
How many electrons are in Mg2+?
10
Element
Pure substance made up of only one type of atom
Proton
Positively charged particle in the nucleus
Solute
Solvent
Solution
Suspension
Substance being dissolved
doing the dissolving
result
mixture(Particles are not completely associated with the molecules of the solvent, they will eventually settle to the bottom)
How many electrons are in a neutral atom of lithium?
3
Which number is equal to the number of protons in the atom?
Atomic Number
Ion
Atom w/a positive and negative charge
Radioactive
Unstable atoms that release energy or particles
Polarity
Held by covalent bonds, when one side has a positive charge and the other has a negative charge. (They can mix w/ other polar molecules, but they cannot mix w/ non-polar molecules)
How many neutrons are in an atom of Mg-25?
13
What subatomic particles determines whether or not an atom is stable?
The neutron determines whether or not the atom is stable. I know this because it creates a balance between protons and electrons. If you were to have 2 protons by itself it would be unstable/unvalid, but if you add a neutron it becomes a stable atom. This is why a neutron determines whether or not the atom is stable.