SC 8 P 8 6

Quiz
•
Science
•
8th Grade
•
Hard
+2
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
C6H12O6 is the chemical formula for glucose, a type of sugar. Which statement is true about glucose?
Glucose is an element, because it can be separated into smaller components.
Glucose is an element, because it is made up of more than one kind of atom.
Glucose is a compound, because it is made of more than one element.
Glucose is a compound, because it is made of protons, neutrons, and electrons.
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student has a sample of an element. Which describes a trait the sample must have in order to be considered an element?
The sample is a liquid at room temperature.
The sample is made of only one type of atom.
The sample contains different types of particles
The sample can be seen only with a microscope.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The periodic table of the elements organizes elements according to their properties. A section of the periodic table is shown.
Which set of elements below is the most similar in chemical behavior?
H, Be, Sc
Fr, Ra, Rf
Ti, V, Cr
Be, Ca, Ra
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
All atoms of an element have in their nuclei the same number of...
electrons
isotopes
molecules
protons
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Atoms and molecules combine to form all the matter we see in our universe. They have unique identities that characterize them and separate them from one another. Atoms can bond together to make larger samples of matter, such as compounds. Atoms are also found in mixtures. Which statement correctly contrasts a compound and a mixture?
A compound is made of a fixed ratio of two or more elements chemically combined, and a mixture can contain two or more compounds physically combined.
A compound contains two or more elements that are physically combined, and a mixture contains two or more compounds that are chemically combined.
A mixture combines to form a compound that cannot be separated physically, and a compound displays physical characteristics of the mixture.
A compound and mixture differ in the number of elements they contain, and both cannot be separated physically or chemically.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these statements correctly describes the trends when moving from left to right within the period from sodium to chlorine?
The number of valence electrons increases, and the atomic radius increases.
The number of valence electrons increases, and the atomic radius decreases.
The number of valence electrons decreases, and the atomic radius increases.
The number of valence electrons decreases, and the atomic radius decreases.
Tags
NGSS.HS-PS1-1
NGSS.HS-PS1-2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mass of an element is the sum of the atomic number and the number of __________.
electrons
ions
neutrons
protons
Tags
NGSS.MS-PS1-1
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