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Chemical changes are considered unseen because they occur at the atomic level, changing the actual structure of the thing. This is in comparison to a physical change, which is visible.
What else can I help you with?
Is the difference between a pure substance and a mixture always easy to observe?
No, the difference between a pure substance and a mixture is not always easy to observe. While pure substances have definite chemical compositions and properties, mixtures consist of two or more substances physically combined. Some mixtures can be challenging to distinguish from pure substances based on visual observations alone.
You can use your senses to observe of a substance?
Yes, you can use your senses to observe properties of a substance. For example, you can use sight to observe its color and texture, smell to detect any odors, touch to feel its texture and temperature, and taste to determine its flavor.
What is the differs between physical property and chemical property?
The way I remember the difference, is: a physical property is a property that you can observe without changing it (or observe without a chemical reaction). So properties like melting point, boiling point, density, color, hardness are all physical properties. A property like 'reacts with water' could only be observed by performing the reaction to observe the change.
What must happen for you to be able to observe an objects chemical properties?
only when a change occurs and a new substance is formed
What is a useful properties?
A public property is some where a whole city or place can go to. Like a park, pool, or tourist attractions.So basically its no one's its everyone's
Is it true Chemical properties aren't as easy to observe as physical properties?
Yes, physical are on the outside and can be observed in a matter of seconds, whereas chemical properties have to be tested, which can take as long as years
What are chemical properties harder to observe than physical properties?
they are harder to observe because youcan't be seen.
What properties would you observe when you use a metric ruler?
You would observe the length of objects.
What are 5 positive properties of cardboard?
Physical properties are characteristics that can be recorded or measured using the senses. So, anything that you can observe or measure about a sheet of paper is fair game. Examples: paper is smooth, easy to crumple, lightweight, its color, its length and width, etc.
How can you observe chemical reaction?
you can observe chemical reactions from its smell, colour, shape, or the change in it's properties
When can chemical properties be observe?
chemical properties can be observed only when the substances in a sample of matter are changing into different substances
Is the difference between a pure substance and a mixture always easy to observe?
No, the difference between a pure substance and a mixture is not always easy to observe. While pure substances have definite chemical compositions and properties, mixtures consist of two or more substances physically combined. Some mixtures can be challenging to distinguish from pure substances based on visual observations alone.
Why are things grouped?
Dividing materials in groups makes it convenient to study their properties and also observe any patterns in their properties.
Is the difference between a pure substance and a mixture easy to observe?
No.
Which soil properties can you observe?
You can observe if the soil is clay, sand, or full of organic matter by the color. You can observe if the soil is compacted by how difficult it is to dig. You can observe if it has worms which is good because worms provide aeration and fertilizer. You can observe how wet the soil is.
What are the ways to observe physical properties in Science?
smell , hear , see, taste , eat
How many sets of properties do you need to observe in order to classify a material as a homogeneous mixture?
To classify a material as a homogeneous mixture, you typically need to observe at least two sets of properties. These properties should indicate that the components of the mixture are uniformly distributed and that there are no visible differences between different parts of the mixture.
