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ATITEAS 7 MATH, SCIENCE, ENGLISH (READING AND LANGUAGE USAGE) ACTUALEXAM 2024
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ATITEAS 7 MATH, SCIENCE, ENGLISH (READING AND LANGUAGE USAGE) ACTUALEXAM 2024
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ATITEAS 7 MATH, SCIENCE,ENGLISH (READING AND
LANGUAGE USAGE) ACTUALEXAM
2024
What are the subatomic particles that make up an atom? What are their electrical charges? - --ANSWER-
>>>>Protons (+)
Electrons (-)
Neutron ( )
Protons - --ANSWER->>>>Positively charged particles
Neutrons - --ANSWER->>>>the particles of the nucleus that have no charge
Electrons - --ANSWER->>>>Negatively charged particles
Which subatomic particles make up the nucleus of an atom? Which particles orbit in the cloud around
the nucleus? - --ANSWER->>>>Nucleus: Contains protons and neutrons.
Electron cloud: Electrons orbit around the nucleus in energy levels or "clouds."
What are the comparative sizes of the protons, neutrons, and electrons that make up an atom? - --
ANSWER->>>>Protons and neutrons: Have about the same mass.
Both are about 2000 (or 1,835) times more massive than an electron.
, Electrons: Much smaller and lighter than protons and neutrons.
Why are electrons not counted in an element's atomic mass number? - --ANSWER->>>>The electron's
mass is negligible compared to protons and neutrons, so they don't significantly contribute to the atomic
mass of an element. Atomic mass is primarily the sum of protons and neutrons.
What is similar about elements in their period? - --ANSWER->>>>Periods (Rows): Elements in the same
period have the same number of electron shells but differ in properties due to the increasing number of
electrons as you move across.
How are elements in the periodic table arranged? - --ANSWER->>>>Elements are arranged in order of
increasing atomic number. (Atomic number is the number of protons in the nucleus)
What is similar about elements in their group? - --ANSWER->>>>Groups (Columns): Elements in the
same group have similar chemical properties and the same number of electrons in their outermost shell
(called valence electrons).
What is similar about elements in their periods? - --ANSWER->>>>ElementsPeriods (Rows): Elements in
the same period have the same number of electron shells but differ in properties due to the increasing
number of electrons as you move across.
The column numbers from 1 to 10 represent - --ANSWER->>>>the number of valence electrons.
How do you determine the valence electrons for column numbers 11 to 18, - --ANSWER->>>>you use the
ones place as the valence count.
How many valence elctrons does Carbon (C) in column 14 have? - --ANSWER->>>>4 valence electrons
What does the period number tell you about the orbital shells? - --ANSWER->>>>the period is the
number of orbits (shells) and the group is the electrons in the last (outer) orbit (shell).
What are the properties of metals? - --ANSWER->>>>good conductors, malleable, ductile, Luster (shiny)
Typically solid at room temperature (except mercury)
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