ORELA Subtest II Math & Science (NES) UPDATED Actual Exam Questions and CORRECT Answers
2 views 0 purchase
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
