Chemistry Bell Ringer for 3/18/25

Chemistry Bell Ringer for 3/18/25

Assessment

Flashcard

Chemistry

11th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

How many electrons should sodium, atomic number 11, have around its Lewis dot diagram?

Back

Sodium has 1 electron in its outer shell, represented in the Lewis dot diagram.

2.

FLASHCARD QUESTION

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals. An example is arsenic.

3.

FLASHCARD QUESTION

Front

How many protons does titanium have?

Back

Titanium has 22 protons.

4.

FLASHCARD QUESTION

Front

What is an isotope?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.

5.

FLASHCARD QUESTION

Front

Which isotope contains 12 protons and 13 neutrons?

Back

The isotope is Magnesium-25 (Mg-25).

6.

FLASHCARD QUESTION

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

7.

FLASHCARD QUESTION

Front

Define Lewis dot structure.

Back

A Lewis dot structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

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