First and Last Name

Elements, Compounds, and Mixtures - Homework

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others
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Hard
Joy Matthiesen
FREE Resource
20 questions
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1.
OPEN ENDED QUESTION
30 sec • 1 pt
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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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