ORELA Subtest II Math & Science (NES) UPDATED Actual Exam Questions and CORRECT Answers
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Course
ORELA Subtest II Math & Science
Institution
ORELA Subtest II Math & Science
ORELA Subtest II Math & Science (NES)
UPDATED Actual Exam Questions and
CORRECT Answers
Atoms - CORRECT ANSWER- central Nucleus surrounded by Electrons. Held by
electromagnetic force between these two.
Nucleus - CORRECT ANSWER- Protons + neutrons. Positively charged, dense and
heavier than...
ORELA Subtest II Math & Science (NES)
UPDATED Actual Exam Questions and
CORRECT Answers
Atoms - CORRECT ANSWER✔✔- central Nucleus surrounded by Electrons. Held by
electromagnetic force between these two.
Nucleus - CORRECT ANSWER✔✔- Protons + neutrons. Positively charged, dense and
heavier than electrons.
Electrons - CORRECT ANSWER✔✔- Negatively charged and orbit the nucleus.
Atoms bond together make - CORRECT ANSWER✔✔- Molecules (2H + 1O = H2O)
Ions - CORRECT ANSWER✔✔- When number of protons and electrons is not equal
Hadrons - CORRECT ANSWER✔✔- Protons and neutrons are made of it
"N" - CORRECT ANSWER✔✔- Representation of the number of Neutrons
"Z" - CORRECT ANSWER✔✔- Representation of the number of Protons (the proton
number or atomic number)
Element - CORRECT ANSWER✔✔- Matter with one type of atom and identified by its
atomic number. 117 elements (94 occur naturally on Earth)
Atomic number - CORRECT ANSWER✔✔- - The number of protons in the nucleus of an
atom
- used to sort elements in the periodic table
Irrational Numbers - CORRECT ANSWER✔✔- Infinite decimal #s, #s with non-recurring
patterns, ie) 2.999 and Pi (3.14...)
Whole natural numbers together with zero. - CORRECT ANSWER✔✔- W = {0, 1, 2, 3, 4,
5, 6, . . . }
Every whole number has a unique opposite or negative whose sum with it is 0 - CORRECT
ANSWER✔✔- 2 + (-2) = 0
Integers - CORRECT ANSWER✔✔- Are whole #s; All + and - #s including 0; Z = {. . ., -3,
-2, -1, 0, 1, 2, 3, . . . }; they have no fractional part
Prime # - CORRECT ANSWER✔✔- can be divided evenly only by 1, or itself
Commutative property of addition and multiplication - CORRECT ANSWER✔✔- When
adding/multiplying two numbers, the sum is the same regardless of the order in which the
numbers are added.
2+3=3+2
3x4=4x3
Associative property of addition and mulitplication - CORRECT ANSWER✔✔- When
adding three or more numbers, the sum is the same regardless of the way in which the
numbers are grouped.
2 + (3 + 5) = (2 + 3) * 5
3 * (4 x 5) = (3 x 4) * 5
, Identity property - CORRECT ANSWER✔✔- Adding zero to a number does not change it.
2+0=2
Distributive property - CORRECT ANSWER✔✔- Multiplying a sum by a # is the same as
multiplying each addend by the # and then adding the products
2 × (3 + 5) = (2 × 3) + (2 × 5)
Exponentiation - CORRECT ANSWER✔✔- repeated multiplication; is often called a power.
For example, the third power of 2 is
2³ = 2 × 2 × 2 = 8
We define the zero power of any nonzero number to be 1 - CORRECT ANSWER✔✔- (-3)⁰
=1
A negative exponent indicates a reciprocal - CORRECT ANSWER✔✔- 2 −³ = ³ =
The first power of any number is itself - CORRECT ANSWER✔✔- 2¹ = 2
Aⁿ / A(m) = - CORRECT ANSWER✔✔- subtract the exponents...A(n-m)
A(n)m - CORRECT ANSWER✔✔- multiply the exponents...A(n*m)
(AxB)ⁿ=
or
(A/Bⁿ= - CORRECT ANSWER✔✔- Aⁿ * Bⁿ
or
Aⁿ / Bⁿ
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