Elements

Elements

Assessment

Flashcard

Science

7th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an element?

Back

An element is the simplest natural substance that cannot be broken down into simpler substances by chemical means.

2.

FLASHCARD QUESTION

Front

What is the second letter of a chemical symbol always written as?

Back

The second letter of a chemical symbol is always written as a lowercase letter.

3.

FLASHCARD QUESTION

Front

How many valence electrons does Sodium (Na) have?

Back

Sodium has 1 valence electron.

4.

FLASHCARD QUESTION

Front

What is a dot diagram?

Back

A dot diagram, or Lewis dot structure, represents the valence electrons of an atom as dots around the chemical symbol.

5.

FLASHCARD QUESTION

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

6.

FLASHCARD QUESTION

Front

What is the maximum number of valence electrons an atom can have?

Back

The maximum number of valence electrons an atom can have is 8, following the octet rule.

7.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together.

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