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Atomic Theory and Chemical Reactions

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Questions and Answers

Which of the following statements is TRUE about atoms of the same element based on the content provided?

Atoms of the same element always have the same chemical properties. (correct)

Atoms of the same element can have different masses.

Atoms of the same element can have different sizes.

Atoms of the same element can be distinguished by their color.

According to the provided content, what happens to atoms during a chemical reaction?

Atoms are rearranged. (correct)

Atoms are split into smaller particles.

Atoms are destroyed.

Atoms are created.

What does the content state about the ratio of atoms in compounds?

The ratio of atoms in a compound is determined by the mass of the elements.

The ratio of atoms in a compound is always 1:1.

The ratio of atoms in a compound is always a whole number. (correct)

The ratio of atoms in a compound can be any fraction.

What is the fundamental building block of all elements, according to the content?

<p>Atoms (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of a compound, based on the content provided?

<p>Compounds are always formed by the reaction of two or more atoms of the same element. (D)</p> Signup and view all the answers

Flashcards

Atom

The smallest unit of an element that retains the chemical properties of that element.

Elements are made of atoms

Atoms of the same element have the same size, mass, and chemical properties.

Compound

A pure substance composed of two or more different elements chemically combined in a fixed ratio.

Law of Definite Proportions

The ratio of atoms of different elements in a compound is always a simple whole number or fraction.

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Law of Conservation of Mass

Chemical reactions involve the rearrangement, combination, or separation of atoms, but not the creation or destruction of atoms.

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Study Notes

Atomic Theory

Elements are made of tiny particles called atoms.
Atoms of the same element have identical size, mass, and chemical properties.
Atoms of different elements are different from each other.

Compounds

Compounds are formed from two or more different elements.
The ratio of atoms in a compound is a whole number or fraction.

Chemical Reactions

Chemical reactions involve the rearrangement, combination, or separation of atoms.
Atoms are not created or destroyed during a chemical reaction.

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Description

Test your understanding of atomic theory, the formation of compounds, and the principles of chemical reactions. This quiz covers key concepts related to atoms, elements, and how they interact in various chemical processes. Perfect for students studying basic chemistry!