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Elements, Compounds, and Mixtures - Homework

Authored by Joy Matthiesen

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Elements, Compounds, and Mixtures - Homework
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20 questions

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1.

OPEN ENDED QUESTION

30 sec • 1 pt

First and Last Name

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Answer explanation

The question asks for a person's full name, which includes both their first name and last name. Therefore, the correct response should provide both components clearly.

2.

OPEN ENDED QUESTION

30 sec • 1 pt

Email Address

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Answer explanation

An email address is a unique identifier for an email account, typically formatted as 'username@domain.com'. It allows users to send and receive messages electronically.

3.

OPEN ENDED QUESTION

30 sec • 1 pt

Class Period

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Answer explanation

Class periods refer to the designated times during which classes are held in educational institutions. They structure the school day and help organize learning activities.

4.

OPEN ENDED QUESTION

30 sec • 1 pt

1. List three examples an element.

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Answer explanation

Three examples of elements are Hydrogen (H), Oxygen (O), and Carbon (C). These are fundamental substances that cannot be broken down into simpler substances and are the building blocks of matter.

5.

OPEN ENDED QUESTION

30 sec • 1 pt

2. List three examples of a compound.

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Answer explanation

Examples of compounds include water (H2O), carbon dioxide (CO2), and sodium chloride (NaCl). Each consists of two or more elements chemically bonded together, forming distinct substances with unique properties.

6.

OPEN ENDED QUESTION

30 sec • 1 pt

3. List three examples of a mixture.

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Answer explanation

Examples of mixtures include salad (various vegetables), air (a mix of gases), and sand and salt (two solids combined). These mixtures retain their individual properties and can be separated physically.

7.

OPEN ENDED QUESTION

30 sec • 1 pt

4. A substance that is composed of two or more elements or compounds that are not chemically combined.

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Answer explanation

The correct answer is a mixture. A substance made of two or more elements or compounds that are not chemically combined is known as a mixture, as opposed to a compound where elements are chemically bonded.

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