Why do noble gases almost never form chemical bonds?

they have filled outer valence shells

What does it mean for a chemical equation to be balanced?

the same # of atoms of each element is on both sides

Which of the following best describes the three general groups of elements?

metals, metalloids, and nonmetals

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Chemistry: Atomic and Nuclear Theory and the Periodic Table

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A #physical science #GA Milestone Review activity with questions about #atoms #periodic table #nuclear theory

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Questions 17

Answers

1
In chemical equations, ___represent the number of units of each substance.
products
coefficients
reactants
precipitates
2
A nonmetal and a nonmetal form a(an)
ionic compound
metallic compound
diatomic compound
covalent compound
3
The atomic mass of an element is ____ of that element.
the number of protons + neutrons of an atom
the number of electrons in each atom
the average mass of an atoms
the number of protons in each atom
4
One property of an electron is
a charge of +1
a charge of -1
a net charge of 0
an atomic mass of -1
5
Why do noble gases almost never form chemical bonds?
they are very rare
it is difficult for gases to form bonds
they have filled outer valence shells
they have very small atomic radii
6
Which of the following is the correct chemical symbol for carbon?
Crbn
Ca
C
Car
7
Which of the following atomic particles is positively charged?
electron
proton
negatron
neutron
8
The chemical formula for a compound tells
how electrons are arranged
how stable the compound is
what elements it contains
what type of chemical bond it forms
9
___are atoms of the same element that have different numbers of neutrons.
alpha particles
compounds
beta particles
isotopes
10
___is a way to describe a chemical reaction using chemical formulas and symbols.
the law of conservation of matter
synthesis
a physical law
a chemical equation
11
Neutrons are located in the
nucleus
electron cloud
neutron cloud
proton cloud
12
What does it mean for a chemical equation to be balanced?
reactants & products are written with the same coefficients
solid products weigh the same as the reactants
the same # of atoms of each element is on both sides
the number of reactants is equal to the number of products
13
Which of the following best describes the three general groups of elements?
metals, metalloids, and nonmetals
metals, metalloids, and synthetics
solid, liquid, and gas
metals, nonmetals, and noble gases
14
The _____ is a chart created by chemists to organize the elements.
periodic table
mass number
isotope
metalloid list
15
A metal and a nonmetal form a(an)
diatomic compound
covalent compound
ionic compound
metallic compound
16
Which of the following would be most useful for describing atoms?
touching with bare hands
observing in a test tube
constructing a model
visualizing with a microscope
17
The ___ of an atom is the number of neutrons plus protons.
nucleus number
half-life
atomic number
mass number

Chemistry: Atomic and Nuclear Theory and the Periodic Table Flashcards | StudBud