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Match it!
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The wave-mechanical model of the atom describes the location of electrons
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
What is the number of electrons shared between the two atoms in an O2 molecule?
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
Which equation represents conservation of mass and energy?
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
The questions in this practice exam are thoughtfully crafted to assess your knowledge and skills. They cover a range of topics and formats, offering a valuable opportunity for self-assessment and preparation.
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
At STP, which property can be used to differentiate a 10.-gram sample of NaCl(s) from a 10.-gram sample of NaNO3(s)?
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
Diamond and graphite are two forms of solid carbon. These two forms of carbon have
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
Which two particles each have a mass of approximately one atomic mass unit?
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
When a ground state electron in an atom moves to an excited state, the electron
in orbitals outside the nucleus
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 890.4 kJ
solubility in water
4
absorbs energy as it moves to a higher energy state
different crystal structures and different properties
a neutron and a proton
has an overall positive charge
Check it!