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Classify each of the following elements as a metal, nonmetal, or metalloid.
Na, Ge, Si, Br, Ag
Metal
Nonmetal
Metalloid
Multiple Choice
Which statement is not part of Dalton's atomic theory?
All atoms of a given element have the same mass and other properties.
Certain groups of elements have similar properties.
Each element is composed of indestructible particles called atoms.
Atoms combine in simple whole-number ratios to form compounds.
Which of the following statements is true about the properties of protons, neutrons, and electrons?
One positive charge cancels (neutralizes) another positive charge.
One negative charge cancels (neutralizes) another negative charge.
Positive and negative charges attract.
Protons have much less mass than neutrons and electrons.
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Classify each of the following elements as a metal, nonmetal, or metalloid.
Na, Ge, Si, Br, Ag
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