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Dalton's atomic theory agrees with modern atomic theory except for the statement that
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
Which of the following is NOT part of Dalton's Atomic Theory?
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
When an electrical current passed through a glass tube, it caused the surface of the tube directly across from the cathode to glow. Scientists concluded that
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
In a glass tube attached to a voltage source, electrical current passes from the negative electrode, called the ____, to the other electrode.
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
The rays produced in a cathode tube are
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
Which statement below accurately describes the contributions of Democritus?
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
Because any element used in the cathode produced electrons, scientists concluded that
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
Experiments with cathode rays led to the discovery of the
ancient Greek philosopher who proposed that matter was not continuous
b. the particles of the beam were negatively charged.
a. cathode
a. all atoms contained electrons.
a. proton.
b. deflected away from a negative plate.
all atoms of the same element have the same mass.
Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
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