SECTION 1
A. Name the following.
1. A state of matter having definite shape and definite volume
2. A state of matter with the largest inter-particle space Gas
3. A change where the original substance undergoes change in its molecular
composition
4. The energy that flows from one object to another due to difference in the temperature
5. The force of attraction or repulsion between matter particles
Answers
Explanation:
Luminous objects are objects that generate their own light. Illuminated objects are objects that are capable of reflecting light to our eyes. The sun is an example of a luminous object, while the moon is an illuminated object. During the day, the sun generates sufficient light to illuminate objects on Earth.
Answer:
: Classifying Matter According to Its State: Solid, Liquid, and Gas
Last updatedJul 2, 2019
3.2: What is Matter?
3.4: Classifying Matter According to Its Composition
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Learning Objectives
To describe the solid, liquid and gas phases.
Water can take many forms. At low temperatures (below 0oC ), it is a solid. When at "normal" temperatures (between 0oC and 100oC ), it is a liquid. While at temperatures above 100oC , water is a gas (steam). The state that water is in depends upon the temperature. Each state has its own unique set of physical properties. Matter typically exists in one of three states: solid, liquid, or gas.
Figure 3.3.1 : Matter is usually classified into three classical states, with plasma sometimes added as a fourth state. From left to right: quartz (solid), water (liquid), nitrogen dioxide (gas).
The state that a given substance exhibits is also a physical property. Some substances exist as gases at room temperature (oxygen and carbon dioxide), while others, like water and mercury metal, exist as liquids. Most metals exist as solids at room temperature. All substances can exist in any of these three states. Figure 3.3.2 shows the differences among solids, liquids, and gases at the molecular level. A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape.