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marta [7]
3 years ago
12

Why does the heat of the heating element stop when the desired temperature in an electric iron is reached

Chemistry
1 answer:
Eva8 [605]3 years ago
6 0
Im not sure but is it to do with it state for example water when reached to a certain temperature turns into gas
until there is nothing left
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A gravel can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separa
Vlada [557]

Answer:

MIXTURE

Explanation:

A mixture is a substance composed of a combination of other different substances. These component(s) of a mixture are physically combined, meaning that there is no chemical linkage between the individual components/constituents of a mixture.

This is the case of the gravel described in this question. The components of gravel can be separated using physical means because they are not chemically bonded to one another, hence, no chemical reactions are needed to separate different parts of gravel into pure substances. This makes gravel a MIXTURE.

6 0
3 years ago
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Jon is running for city council and wants to campaign on human development goals for his community. Which issue should he use? A
kotegsom [21]

Answer:

E. better schools

Explanation:

This contributes the most to human development in his community because it provides children with more resources and better opportunities than a sub-par education system. If a community is able to better their school system, they will begin to see a lot of positive changes in their area.

6 0
4 years ago
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Which of the following isotopes is radioactive A)C-12 B)Pb-206 C) Tc-99 D)Ne-20
Gre4nikov [31]
C) Tc-99 is a radioactive isotope also known as radioisoptope. 
4 0
3 years ago
a mixture contains two or more substances that are physically combined and there is no electron bonding
crimeas [40]


True.

A mixture is composed of two or more pure substance that are physically combined but are not combined chemically and thus no electrons (of their atoms) are involved.

The primary properties of a mixture include:

1. The components of a mixture are easily separated

2. The components each keep their original properties.

3. The proportion of the components may vary.

There are two main categories of mixtures:

1. Heterogeneous mixtures - substances are not evenly distributed e.g. oil and water mixture

2. Homogeneous mixtures - substances are evenly distributed throughout the mixture e.g. salt water, air. 




4 0
3 years ago
Choose the correct answer. The color of the iguana is an adaptation to its:
Lady_Fox [76]

Answer:

B

Explanation:

so that way they can hide away from the predators

3 0
3 years ago
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