REVIEW-Matter: Properties & Changes
Authored by R. Nahgahgwon
Chemistry
8th Grade
NGSS covered
Used 98+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Water (H2O) and table salt (NaCl) can be combined to form salt water. How can this combination be classified?
As a compound because the water and table salt are chemically combined
As a compound because the water and table salt form a new pure substance
As a mixture because the water can be evaporated and physically separated from the table salt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which best describes an element?
It is the simplest form of matter
It can be changed into a compound
It can be broken down into simpler mixtures
It is composed of more than one type of atom
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A group of science students used water, filter paper and a hot plate to separate a mixture of salt and sand. Which of the following did the students most likely do first?
Shake the mixture until the sand settles on the bottom
Pour the mixture through the filter paper
Heat the mixture on the hot plate
Dissolve the salt by adding water to the mixture
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hydrogen peroxide has one more oxygen atom than the compound water. What is the result of this extra oxygen atom?
It makes peroxide more soluble than water
It makes peroxide more carbonated than water
It changes most of the properties of the compound
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The smallest part of an element that retains the properties of the element is the
proton
nucleus
electron
atom
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many elements are in the compound sulfuric acid, H2SO4?
1
2
3
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which two elements make up household ammonia, NH3?
Neon and helium
Neon and hydrogen
Nitrogen and helium
Nitrogen and hydrogen
Tags
NGSS.MS-PS1-1
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