Physical Science Chapter 6 Lesson 1 Questions 11/5/24

What happens to titanium when it reacts with oxygen at the welding temperature?

• It forms a stronger bond.

• It forms an oxide.

• It becomes more flexible.

• It melts completely.

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What effect does the formation of an oxide have on the weld of the titanium mug?

• It makes the weld more flexible.

• It strengthens the weld.

• It makes the weld more brittle.

• It prevents the weld from forming.

On what do chemical properties such as reactivity depend?

• The element's color.

• The element's electron configuration.

• The element's melting point.

• The element's density.

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When is an atom unlikely to react?

• When it has an odd number of electrons.

• When it has more protons than electrons.

• When the highest occupied energy level is filled with electrons.

• When it has an equal number of protons and neutrons.

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What does an electron dot diagram represent?

• The number of protons in an atom

• The number of neutrons in an atom

• The valence electrons of an atom

• The atomic mass of an element

In an electron dot diagram, what does the symbol in the center represent?

• Only the valence electrons

• The nucleus and all other electrons

• The atomic number

• The chemical bonds

Which element is in Group 1A and has a stable electron configuration?

• Be

• Li

• B

• C

Which element is in Group 8A and is a noble gas?

• O

• F

• Ne

• Cl

Which element is in Group 5A and is a non-metal?

• N

• Mg

• Al

• Ca

Which element is in Group 2A and is an alkaline earth metal?

• Na

• Be

• B

• C