Unit 1 Review HMH (2024)
Authored by Thais Gaona
Science
7th Grade
NGSS covered
Used 13+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the periodic table to identify which statement best describes carbon dioxide, CO2.
It is an element that consists of 3 total atoms
It is a compound that consists of 3 total atoms
It is an element that consists of 3 total molecules
It is a compound that consists of 3 total molecules.
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Think about the similarities and differences between elements and compounds. Which of the following is true?
Elements and compounds are made of one kind of atom
Elements and compounds are made of more than one kind of atom.
Elements are made of molecules, and compounds are made of atoms.
Elements are made of one kind of atom, and compounds are made of more than one kind of atom.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Glucose has the chemical formula C6H12O6. Which of the following is true about one molecule of glucose?
It consists of 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
It consists of 12 carbon atoms, 6 hydrogen atoms, and 12 oxygen atoms.
It consists of 6 carbon atoms, 6 hydrogen atoms, and 12 oxygen atoms.
It consists of 12 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
Tags
NGSS.MS-PS1-1
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Elements and compounds are similar in some ways and different in others. Circle THREE correct answers.
The chemical formula for chlorine gas is C.
An element’s symbol must start with a capital letter.
Elements are represented by a single chemical symbol.
A compound, such as water, can have different chemical formulas.
Compounds have multiple chemical symbols that together represent the elements that constitute the compound.
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Bill has iron flakes, salt, water, and bromine. He makes a table to describe all the different substances he has made and to analyze the structure of these substances. Classify all the substances made of atoms.
Iron (Fe)
Salt (NaCl)
Water (H2O)
Bromine (Br2)
Tags
NGSS.MS-PS1-1
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Bill has iron flakes, salt, water, and bromine. He makes a table to describe all the different substances he has made and to analyze the structure of these substances. Classify all the substances made of molecules.
Iron (Fe)
Salt (NaCl)
Water (H2O)
Bromine (Br2)
Tags
NGSS.MS-PS1-1
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Bill has iron flakes, salt, water, and bromine. He makes a table to describe all the different substances he has made and to analyze the structure of these substances. Classify all the substances that are elements.
Iron (Fe)
Salt (NaCl)
Water (H2O)
Bromine (Br2)
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