Ch. 3: Properties Of Matter
This is a test for Chapter 3 Sec 1, 2, and 3. Hopefully it's fun for you and try to enjoy! :)
Questions and Answers
- 1.
What is matter?
- A.
Anything that has metal
- B.
Anything that takes up space and has mass
- C.
Only material and weird things
Correct Answer
B. Anything that takes up space and has massExplanation
The correct answer is "anything that takes up space and has mass." This definition accurately describes matter, as it encompasses all physical substances and objects that occupy space and have mass. It includes both tangible materials like solids, liquids, and gases, as well as intangible particles like atoms and molecules. This definition is widely accepted in the scientific community and aligns with the fundamental properties and characteristics of matter.Rate this question:
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- 2.
is the curve at the surface of the liquid.
Correct Answer
MeniscusExplanation
The correct answer is "Meniscus." The meniscus is the curved surface of a liquid, typically seen in a container, where the liquid is higher at the edges and lower in the center. This curvature is caused by the adhesive forces between the liquid and the container, which pull the liquid up along the sides. The meniscus can be concave or convex, depending on the properties of the liquid and the container.Rate this question:
- 3.
What do you have to use to find the volume?
Correct Answer
You must use another object to hold the floating object underwater.Explanation
To find the volume of a floating object, it is necessary to use another object to hold it underwater. This is because the volume of an object can be determined by measuring the amount of water it displaces when submerged. By using another object to hold the floating object underwater, the displacement of water can be accurately measured, allowing for the calculation of the object's volume.Rate this question:
- 4.
Define density.
- A.
How heavy the things are inside of it
- B.
How big it is from the whole view
- C.
Amount of matter in a given space or volume
Correct Answer
C. Amount of matter in a given space or volumeExplanation
Density is defined as the amount of matter or mass contained within a given space or volume. It is a measure of how closely packed the particles or molecules are in a substance. It is not related to the weight or size of the object, but rather to the concentration of mass within a specific area. The higher the density, the more mass is present in a given volume, while a lower density indicates less mass in the same volume.Rate this question:
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- 5.
What is an example of physical changes?
Correct Answer
Water freezing to become ice cubes or a piece of wood changing shape.Explanation
The given answer correctly identifies water freezing to become ice cubes and a piece of wood changing shape as examples of physical changes. In both cases, the substances undergo a change in their physical properties without any alteration in their chemical composition. Freezing water causes it to solidify and form ice cubes, while a piece of wood changing shape involves a change in its form or structure without any chemical reactions taking place. These examples demonstrate physical changes where the substances involved undergo transformations in their physical states or appearances.Rate this question:
- 6.
Whats a change that affects one or more physical properties of a substance?
Correct Answer
Physical change is the change that affects one or more physical properties of a substance.Explanation
A physical change refers to a change in a substance that does not alter its chemical composition. It only affects the physical properties of the substance, such as its shape, size, or state of matter (solid, liquid, or gas). Examples of physical changes include melting ice, boiling water, or crushing a can. These changes do not result in the formation of a new substance, but rather alter the appearance or behavior of the existing substance.Rate this question:
- 7.
What does chemical properties describe?
- A.
How a nail can bend
- B.
Matter based on its ability to change into new matter
- C.
What type of chemicals a drug has
Correct Answer
B. Matter based on its ability to change into new matterExplanation
Chemical properties describe the behavior of matter based on its ability to undergo chemical reactions and change into new substances. This includes characteristics such as reactivity, flammability, and stability. By studying chemical properties, scientists can understand how different substances interact and transform, leading to advancements in various fields such as medicine, materials science, and environmental studies.Rate this question:
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- 8.
Whats soured milk an example of?
Correct Answer
Its an example of chemical changes.Explanation
Soured milk is an example of a chemical change because the process of souring involves the breakdown of lactose (a sugar in milk) by bacteria, resulting in the production of lactic acid. This change in composition and the formation of a new substance (lactic acid) is characteristic of a chemical change.Rate this question:
- 9.
Whats the difference with physical changes and chemical changes?
- A.
Physical changes doesn't change its form
- B.
Physical changes do change its form
- C.
None of the above
Correct Answer
A. Physical changes doesn't change its formExplanation
The given answer is incorrect. Physical changes do change the form of a substance, but they do not change its chemical composition. Examples of physical changes include melting, freezing, boiling, and dissolving. In these changes, the substance may change its state (solid, liquid, or gas) or its physical properties (such as size, shape, or color), but its chemical identity remains the same.Rate this question:
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