ESAS Lesson Objectives 1

Hazel Lynn Ramos · 95問 · 2年前

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問題一覧

what is the heaviest subatomic particle

neutron

when Fe++ changes to Fe+++ in a reaction

it loses an electron

what is the common unit to indicate the mass of a particle

atomic mass unit

what is the description of the arrangements of atoms or ions in a material

structure

what do you call the horizontal arrangement of elements of increasing atomic number in the periodic table

period

what do you called the vertical arrangement of elements

groups

materials in this group are composed of one or more metallic elements such as iron, aluminum, copper, titanium, gold and nickel. What is this group called?

metals

what percent of human body is carbon

18%

which of the following metallic element has meaning "heavy stone"

tungsten

which of these elements has the highest atomic number

plutonium

in the periodic table of elements, which one of the following is the light metal?

potassium

what is the metal used to recover copper from a solution of copper sulphate

This materials include the familiar plastic and rubber materials. Many of them are organic compounds that are chemically based on carbon, hydrogen and other non-metallic elements. What are these materials called

polymers

the sodium ion in sodium chloride NaCl, has what charge

the charge of aluminium atom in the aluminum foil is

what is the chemical formula of sulfur trioxide

SO3

give the formula for aluminium nitride

AlN

formula for calcium chloride

CaCl2

what are the van der waals forces

weak secondary bonds between atoms

what kind of bond do you expect in bronze

metallic

two major types of chemical bonds are observed in chemical bonding ionic and covalent. which of the following has a bond that is the least ionic in character

how is molality defined

the number of moles of solute in 1,000 g of solvent

the mole is a basic unit of measurement in chemistry. which of the following is not equal to or the same as 1 mole of the substance indicated

16 g of oxygen molecules

Which of the following is the best project management tool to use to determine the longest time the project will take?

network diagram

estimated value of the property at the useful life

salvage value

Which of the following situations has a conventional cash flow so that an internal rate of return can safely calculated and used?

You invest in a safe dividend stock and receive dividends each year.

What is a substance that cannot be broken down into simpler substances?

Element

In the periodic table of elements, which ONE of the following is light metal?

Potassium

The worth of the property which is equal to the original cost less the amount which has been charged to depreciation.

Book value

A series of uniform payment over an infinite period of time

Perpetuity

What refers to ions that are NOT involved in the overall reactions?

Spectator ions

Vinegar is a solution of water and what kind of acid?

Acetic acid

Is a measure of the effectiveness of an investment of a capital.

Rate of Return

Which of the following defined a phenomenon of taking up atoms or energy from the environment into a body?

Absorption

Buying insurance is a form of:

Risk sharing

What is the metal used to recover copper from a solution of copper sulphate?

It is an atom of a specific isotope

Nuclide

Properties of a substance that are independent of the shape and size of the substances examples are temperature, pressure, etc.

intrinsic properties

properties of a substance that are related to its shape and size examples are volume, mass, weight, etc.

extrinsic properties

has definite composition and definite boiling point

pure substance

matter that has no definite boiling point nor definite composition

mixture

a substance composed of only one kind of atom

element

a substance composed of two or more elements chemically combined in definite and constant proportion

compound

smallest particle of elements

atoms

smallest particles of compounds

molecules

positively charged electrode

anode

negatively charged electrode

cathode

positively charged ion

cation

negatively charged ion

anion

central part of an atom in which protons and neutrons are located

nucleus

some of the protons and neutrons in the atom

atomic weight or mass number

number of protons in the nucleus

atomic number

used for compounds that are made up of ions and have primarily ionic bonding

formula weight

use for compounds that are composed of molecules and have primarily covalent compound

molecular weight

this is a way chemist used to count atoms and molecules by relating number to mass

mole

it is a homogeneous mixture made up of a solute dissolved in solvent, the composition of which is variable

solutions

it is a solution refers to the amount of solute in each amount of solvent or solution

concentration

is calculated by dividing the mass of solute by the total mass of solution and multiplied by 100

percent concentration

is a solution that contains 3.25 mol of sodium chloride in 250 ml of solution

molar concentration

what refers to the number of gram equivalent weights of solute per liter of solution

normality

how are materials containing atoms with less than four valence electrons are classified

a conductor

how are elements number 58 to 71 in the periodic table called

lanthanons

what term refers to the passage electric current through electrolyte caused by an external voltage source

electrolysis

when all of the atoms of a molecule are the same, substance is called

a compound

the following refers to the measure of the amount of negative ions in the water

alkalinity

what is formed when acids will react with active metals

hydrogen

the condition of liquid electrolyte is measured in terms of its

specific gravity

how much is the pH content of an acid

between 0 and 7

how are elements number 90 to 103 in the periodic table called

actinons

the amount of electricity a battery can produce is controlled by

the strength of the acid

if an atom contains more than four valence electrons, the material is classified as

insulator

which of the following refers to the measure of the quantity of an element or compound

mole

the electrolyte is a solution of water and

sulfuric acid

how much is a pH content of the base

between 7 and 14

a deuteron is

a nucleus containing neutron and proton

which of the following elements is not radioactive

cobalt

what do you call solutions having the same osmotic pressure

isotonic solutions

what refers to the formation and collapse of minute bubbles of vapor in liquid which caused by a combination of reduced pressure and increase velocity in the fluid

cavitation

dielectric is another name for

an insulator

which of the following refers to the change from gaseous to liquid phase

condensation

a galvanic cell is not dependent of which factor

volume

"at the same pressure and temperature equal volumes of all gases contain equal number of molecules" this is known as

avogadro's law

the property of wave which occurs when a wave strike an object or comes to a boundary or another medium and is at least diverted back into the original medium

reflection

occurs when a wave crosses a boundary, its speed generally changes because the new material has a different characteristic

refraction

the property of wave to bend around an edge of an object but it is unrelated to refraction

diffraction

the property of wave whereby waves of different frequencies spread apart from one another. when wave speed does depend on wavelength the waves are said to exhibit

dispersion

a phenomenon that occur when two or more waves overlap in the same region of space. standing waves are simple example of it

interference

when a source of sound or a listener or both are in motion relative to the air, the pitch of the sound heard by the listener is not the same as when source and listener are at rest. this phenomenon refers to

doppler effect

what is the principle behind fiber optics

reflection

the core of fiber optic is

glass

the ratio of the velocity of light in vacuum to its velocity of another material is

refractive index

the techniques of finding the intensity and phase of light at any point only when a portion of wave front is exposed

huygens principle

objects that emit their own light are called

luminated

what is the gas present in the atmosphere which filters out of the sun's ultraviolet light and provides an effective shield against radiation damage to living things

ozone

which of the following define a phenomenon of taking up atoms or energy from the environment into a body

absorption

which of the following define the reverse process to the ionization energy. it is the energy change often expressed in eV associated with an isolated gaseous atom accepting one electron

electron affinity

which of the following do you call the brain of any computer system

central processing unit

a printed circuit board that has slots to connect cards into. often they also include the cpu and memory is called

motherboard

the central processing unit of computer is a combination of

arithmetic logic and control unit

100

which of the following classes of mass memory devices use a laser beam to write and read on to a specified quoted disk

optical disk memory

Math

Math

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