Review 4 Questions and
Answers
when dealing with powers and exponents a quantity to the power of 0=
Ans- 1
ex: 5^0
when dealing with powers and exponents a quantity to the -1 power is equal to
what?
Ans- the reciprocal of the quantity
ex: 5^-1 is equal to 1/5
,when dealing with powers and exponents to multiply exponents with the same
base=
Ans- keep the base number and add the exponents
ex: 5^4 x 5^3 = 5^7
when dealing with powers and exponents to divide exponents with the same
base=
Ans- keep the base number the same and subtract the exponents
ex: 5^6/5^2=5^4
when dealing with powers and exponents when an exponent is raised to a power=
Ans- multiply the exponents
ex: (5^4)^2= 5^8
, exponents describing a number larger than 1 have what type of exponent?
Ans- a positive exponent
exponents describing a number less than 1 have what type of exponent?
Ans- a negative exponent
what are the 3 fundamental particles of an atom?
Ans- protons, neutrons, electrons
atoms are naturally electrically neutral which means what?
Ans- they have the same number of protons and electrons
what is included in the nucleus?
Ans- protons and neutrons
what type of ion is created when electrons are lost?
Ans- positive ion