points
`Which of the following statements is true as stated by the chemist Joseph proust?
Question options:
All atoms of a given element have a constant composition and are different than atoms of any other element.
All samples of a given compound have the same proportions of their constituent elements.
The nucleus is a dense region of positive charge that always contains protons and neutrons.
Matter cannot be either created or destroyed in a chemical reaction.
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this is the law of constant composition
points
What is matter made up of at the most fundamental level?
Question options:
neutrons
isotopes
electrons
atoms
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All matter is composed of elements, and all elements are made of atoms; but matter occupies spaces and has mass.
Revie
points
How would you correctly write the atomic symbol of nitrogen?
Question options:
, Ni
Ng
Nt
N
none of the above
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Topic discussed in Chapter 3.6 See the periodic table.
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`The elements that touch the zig-zag line on the periodic table are known as
Question options:
metals
nonmetals
metalloids
transition metals
none of the above
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Topic discussed in Chapter 3.6 See the periodic table.
points
An atom of bromine-79 contains
Question options:
34 protons and 35 electrons, only
44 protons, 44 electrons, and 35 neutrons
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