Nonmetals — Unit test Answers

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Which properties make a metal a good material to use for electrical wires?

malleability and reactivity

conductivity and ductility

ductility and malleability

reactivity and conductivity

The elements least likely to form bonds are found in which group?

An atom of the element zinc has an atomic number of 30 and a mass number of 65. How many protons does an uncharged zinc atom have?

The table below lists the properties of a metallic element.

Group 1

Group 3

Group 12

Group 13

This is how sodium appears in the periodic table.

number of neutrons.

chemical symbol

atomic mass

combined number of electrons and protons.

Who is known as the "father of modern chemistry” because he first organized all known elements into four different groups?

Johann Wolfgang Döbereiner

Antoine Lavoisier

Dmitri Mendeleev

Henry Moseley

What are the two parts of an atom?

the nucleus and the proton cloud

the neutron and the electron cloud

the neutron and the proton cloud

the nucleus and the electron cloud

Atom A and Atom B have the same number of protons, but they do not have the same number of neutrons.Which statement describes these atoms?

Atom A and Atom B are isotopes of the same element.

Atom A and Atom B are different elements.

Atom A and Atom B have different atomic numbers.

Atom A and Atom B have the same mass number.

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