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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
They have a metallic lusterMetals
The number of protons in the nucleus. More protons increased nuclear charged and increased attraction between the nucleus and electron.Nuclear Charge
T or F Melting point is an intensive propertyTrue
1/2 of the distance between nuclei of two atoms of the same element in a diatomic molecule.Atomic Radius
The energy needed to remove the attraction of the nuclear charge and remove an electron (from a gaseous atom) is called.Ionization Energy
T or F Cations has a lower Ionization energyTrue
The reduction of attractive force of the nucleus for the outer electrons caused by electrons in energy levels between nucleus and the outer electrons.Electron Shielding
What are the name of the elements under the Group 8A?Noble Gases
In a GROUP TREND, as you go down, atomic size is __________Increasing
In a GROUP TREND, as you go down a column, Ionization energy _______Decreases
A positively charged ionCations
A negatively charged ionAnions
In a PERIODIC TREND, as you go L TO R, atomic size is ________Decreasing
Are the most reactive nonmentalsHalogens
In a PERIODIC TREND, as you go across period (L TO R), Ionization energy _______Increases
T or F More protons increased nuclear charge and increased attraction between the nucleus and electrons.True
T or F Anions are more likely to gain electronsTrue
The ability of an atom to pull on the electronElectronegativity
T or F Electronegativity increases going left to right across the periodic table.True
T or F Energy is needed to remove an electron from an atom.True
Anions has a higher Ionization energyTrue
Groups labeled with an "A" are the ____________Representative Elements
Located on the left side of the periodic table ang have the following properties: solids, metallic luster, good conductors, malleable and ductileMetals
T or F Elements in the same period have consecutive atomic numbers but they differ predictably in their chemical properties.True
Instead of ordering the elements by increasing atomic mass, Henry Moseley arranged them by ________Atomic Number
The original periodic table was discovered by russian chemist namedDmitri Mendeleev
During the mid 1800s there are about ________ known elementsSeventy
What is the meaning of the word Periodic?means to exhibit a repeating pattern
An english physicist, responsible for the creation of the modern periodic tableHenry Moseley
One way to clarify the elements on the periodic table is by the ________ and __________ to which they belong.Period - Group
Are the horizontal rows on the periodic table and are numbered 1 to 7Period
T or F Cations are more likely to lose electronsTrue
Are the vertical columns on the periodic table, numbered 1 to 8Groups / Families
T or F Elements in the same group, usually have similar propertiesTrue
They are good conductor of heat and electricityMetals
T or F The properties of the representative elements tend to be "Largely Predictable" based on their position in the periodic tableTrue
The elements bordering the stain stepped line are called the ___________Metalloids
The groups labeled with B are the ___________________Transition Elements
T or F The properties of the transition metals are less predictableTrue
T or F Some transition metals exist in nature as free compoundsTrue
What are the name of the elements under the Group 1A?Alkali Metals
This elements are very reactive so they cannot be found in nature as free elementsAlkali Metals
What are the name of the elements under the Group 7A?Halogens
T or F Non-metal tend to gain electrons in chemical reactions to gain the same number of electrons as the nearest noble gasTrue
Are located on the right side of the periodic tableNon-metals
What are the name of the elements under the Group 2A?Alkaline Earth Metals
Example of reactive metalsSodium
T or F Non-metals have properties that are opposite of metalsTrue
These elements are harder, denser, stronger than alkali metals they also have higher melting pointAlkaline Earth Metals
Are chemically inert. They do not react with other elements on the periodic tableNoble Gases
They are mouthy brittle solids with properties of both metals and non-metalsMetalloids