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According to Dalton's atomic theory, atoms
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
Which statement below accurately describes the contributions of Democritus?
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
Dalton's atomic theory agrees with modern atomic theory except for the statement that
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
The rays produced in a cathode tube are
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
If 4.0 g of element A combine with 10. g of element B, then 12 g of element A combine with ____ g of element B.
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
Experiments with cathode rays led to the discovery of the
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
In a glass tube attached to a voltage source, electrical current passes from the negative electrode, called the ____, to the other electrode.
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
Because any element used in the cathode produced electrons, scientists concluded that
a. proton.
a. all atoms contained electrons.
c. of each element are identical in size, mass, and other properties.
ancient Greek philosopher who proposed that matter was not continuous
all atoms of the same element have the same mass.
a. cathode
d. 30.
b. deflected away from a negative plate.
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