Midterm Flashcards
in an atom, where are the protons and neutrons found?
nucleus
what items are responsible for the mass of an atom?
protons and neutrons
what is an isotope?
different number of neutrons than normal
while liquid is boiling, what happens to the temperature
it stays the same
what is the valence level?
the outermost energy
what is an example of an exothermic reaction?
hand warmer
give two examples of a heterogeneous mixture
soup, ice cream
where is a reactant in the equation?
on the left side
where is the product in the equation?
on the right side
if Li and Br combine, what type of bond is formed?
ionic
if Li and Br combine, what is their chemical formula?
LiBr
3000cm= __m
3m
2kg= __g
2000g
the amount of matter in an object is called its
mass
the amount of space an object occupies is called its
volume
which phase of matter has the greatest amount of energy?
gas
what is the law of conservation of mass?
the mass before a reaction equals the mass after a reaction in a closed system
what is devon doing?
thinking about the taco bell saga
did you watch the taco bell saga music video yet?
GO WATCH IT
what is the best video trilogy on youtube?
the longboard rodeo tango
what is the formula for density?
M/V
what type of reaction is
2H2o –> 2H2+ O2
decomposition
Al + PO4 –> AlPO4
synthesis
Al2O3 + 2B –> Al + B2O3
single replacement
