Elements and Compounds

Elements and Compounds

Assessment

Flashcard

Science

7th Grade

Hard

NGSS
MS-PS1-1, MS-PS1-5, HS-PS1-3

+1

Standards-aligned

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is made up of atoms that have the same number of protons.

2.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together in fixed proportions. Compounds have different properties than the elements that make them up.

Tags

NGSS.MS-PS1-1

3.

FLASHCARD QUESTION

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl, which consists of sodium (Na) and chlorine (Cl) in a 1:1 ratio.

Tags

NGSS.MS-PS1-1

4.

FLASHCARD QUESTION

Front

What is the chemical formula for methane?

Back

The chemical formula for methane is CH4, which consists of one carbon (C) atom and four hydrogen (H) atoms.

Tags

NGSS.MS-PS1-1

5.

FLASHCARD QUESTION

Front

What is the chemical formula for oxygen gas?

Back

The chemical formula for oxygen gas is O2, indicating that it is made up of two oxygen (O) atoms.

Tags

NGSS.MS-PS1-1

6.

FLASHCARD QUESTION

Front

What is the chemical formula for carbon dioxide?

Back

The chemical formula for carbon dioxide is CO2, which consists of one carbon (C) atom and two oxygen (O) atoms.

Tags

NGSS.MS-PS1-1

7.

FLASHCARD QUESTION

Front

What is the chemical formula for nitrogen gas?

Back

The chemical formula for nitrogen gas is N2, indicating that it is made up of two nitrogen (N) atoms.

Tags

NGSS.MS-PS1-1

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