atoms
what subatomic particle gives the identity of the atom
what is the proton
what are the bonds created between two water molecules?
hydrogen bond
what is the difference between moles and molarity?
moles is the amount of substance, molarity is the concentration
amount- amount of molecules
concentration-amount dissolved in solution
what is the difference between polar and non-polar covalent bonds?
polar- not equal sharing of electrons
non-polar- equal sharing of electrons
what is the difference between groups and periods on a periodic table?
what is periods are about the number of shells the atoms have and groups are the same number of electrons
what does the atomic mass of an atom tell me?
what is the neutrons and protons
what type of bond is in-between water molecules?
polar covalent bonds
moles= mass (g)/molar mass
Magnesium has 2 valence electrons, and oxygen has 6 valence electrons.
Which statement best explains why magnesium oxide forms a stable ionic compound?
A. Magnesium gains 2 electrons from oxygen, forming Mg²⁻ and O²⁺ ions.
B. Magnesium and oxygen share 2 pairs of electrons, forming a covalent bond.
C. Magnesium transfers 2 electrons to oxygen, forming Mg²⁺ and O²⁻ ions that attract through electrostatic forces.
D. Magnesium and oxygen each lose 1 electron, forming positively charged ions.
C.
what is electron affinity?
how much an atom wants to gain an electron.
what is the difference between an atom that is inert and reactive?
what is inert= stable reactive = unstable
what is the role of water molecules in a plant and how does it work?
what is the movement of water from roots to the rest of plant, water molecules bind to each other and move up the plant
what is the equation of molarity?
M= moles/L
what is van der waals
low- groups 1-2
high groups 14-18
How many valence electrons are in the atoms of group 13, 14, 15, 16, 17, and 18
3-8
what is the equation for specific heat of a plant?
what is q=mcdeltaT
what does it mean if something is acidic or something is basic?
acidic=donates protons to solution
basic= accepts protons to solution
what is the polarity of water?
when charges differ between oyxgen and hydrogen in the water molecules so that it causes partial charges and difference in charges.
what is ionization energy?
energy needed to remove an atom?
what is radioactive decay mean?
when an neutron from cosmic rays, hits the nucleus of a nitrogen-14 atom and causes the proton and electron to be emitted so it turns into carbon-14
A student heats a 50.0 g sample of water. The water absorbs 2,500 J of thermal energy. The initial temperature of the water is 20°C.
what is 30.96 Celcius
what is the pH of a solution if the molarity of H is 0.00001?
pH= 5
rank all the bonds from strongest to weakest.
if I have one bond made between 2 atoms, how many total electrons are being shared?
2