Matter Practice Test
Quiz
•
Science
•
8th Grade
•
Easy
+1
Standards-aligned
Used 1+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which procedure BEST measures a physical property of a salt cube?
A. Put the sample in water and watch for rust.
B. Hold a piece in a flame to see if it burns.
C. Measure its sides, calculate volume, find mass, and divide mass by volume for density.
D. Add vinegar to a beaker, drop in the sample, and record what happens.
Answer explanation
Choice C is correct because measuring the sides and calculating volume, then finding mass to determine density directly assesses a physical property of the salt cube, unlike the other options which test for chemical reactions.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student investigates a property of a salt block.
Part B: Which statement explains the investigation?
The property tested is combustibility; the procedure checks if the sample burns when exposed to a flame.
The property tested is reactivity; the procedure checks if the sample changes when mixed with oxygen, producing rust.
The property tested is reactivity; the procedure checks if the sample changes when mixed with vinegar (acetic acid).
The property tested is density; the procedure measures the mass and volume of the sample.
Answer explanation
The correct choice is that the property tested is density, as the procedure involves measuring the mass and volume of the salt block, which directly relates to its density.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is a chemical property of baking soda?
A. Baking soda is soluble in water
B. Baking soda is white
C. Baking soda is a powder
D. Baking soda reacts with vinegar
Answer explanation
The correct choice is D. Baking soda's reaction with vinegar produces carbon dioxide gas, which is a chemical property. The other options describe physical properties, such as solubility, color, and form.
Tags
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a chemical property of the red, transparent liquid?
red color
transparent
combustible
freezing point
Answer explanation
The correct choice is 'combustible' because it describes a chemical property related to the substance's ability to burn. The other options, such as color and transparency, are physical properties.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two gold samples must have the same
mass.
volume.
length.
density.
Answer explanation
Two gold samples must have the same density because density is an intrinsic property of a material. Gold has a specific density, so any two samples of gold will share this characteristic, regardless of their mass, volume, or length.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is a chemical property of water?
Water expands when it freezes.
Water boils at 100°C.
Water can separate into hydrogen and oxygen.
Water is denser than ice.
Answer explanation
The correct choice, 'Water can separate into hydrogen and oxygen,' describes a chemical property, as it involves a change in the chemical composition of water. The other options describe physical properties.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between a physical change and a chemical change?
A. A physical change can give off light, but a chemical change does not.
B. A physical change is not reversible, but a chemical change is.
C. Different substances are present after a physical change, but not after a chemical change.
D. Different substances are present after a chemical change, but not after a physical change.
Answer explanation
A physical change alters the form of a substance but not its chemical composition, so the same substances remain. In contrast, a chemical change results in the formation of new substances, making option D the correct choice.
Tags
NGSS.MS-PS1-2
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