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which of the following describes a mixture?

matter that is composed of a single element and has all the same physical properties
matter that is made of molecules of all the same type
two atoms chemically bonded together
a substance made of two or more types of atoms that are not chemically bonded

A mixer is a substance made by mixing two or more substances that are not chemically bonded.

The Mixture is the result of two or more substances mixed in such a way that they remained unchanged.

The mixture has properties that depend on how much the substance is present in the mixture. We can say that a mixture is a substance that is made by adding two or more substances in such a way that they remained unchanged or are not chemically bonded with each other.

There are two categories in which mixture is classified, homogeneous mixture and heterogeneous mixture.

A Homogeneous mixture is a substance in which atoms of the substance are mixed in such a way that their separation is invisible. Examples are water and sugar.

A Heterogeneous mixture is a substance in which atoms of the substance are mixed in such a way that their separation is visible. Examples are sugar and salt.

To know more about the mixture, follow the link given below.

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A substance made of two or more types of atoms that are not chemically bonded

Explanation:

Mixtures are systems made up of two or more compound or simple substances that are different. Thus, they present undefined and variable physical properties. These properties depend on the amount of each substance in the mixture and the nature of them. In other words, a mixture is a substance composed of two or more types of atoms that are not chemically bonded.

Mixtures can be classified as homogeneous and heterogeneous. In the case of hydrated alcohol, we have a homogeneous mixture. But what is a homogeneous mixture? It is a mixture in which we cannot see the separation of its components. Its entire length is uniform and has a single phase. Heterogeneous mixtures, on the other hand, are those that have more than one phase, such as the mixture of water and oil, water and sand, granite (mixture of quartz, mica and feldspar) and so on.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

i already answered it by 34/s