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jeka57 [31]
3 years ago
9

True or false? Steel is a chemical element.

Chemistry
2 answers:
Irina-Kira [14]3 years ago
8 0
I think answer is false
dem82 [27]3 years ago
3 0
Steel is a blend of iron and carbon combined with at least one different metals or nonmetals. Since steel is a blend instead of a substance compound, steel does not have a set synthetic compound recipe. The naming tradition for steel relies on the steel's piece—what is blended in with the iron, for example, carbon steel or tungsten steel.
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Are these synthesis decomposition single replacement or double replacement?
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Answer:

1. Synthesis

2. Decomposition

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4. Synthesis

5. Decomposition

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Kind of a hard picture to look at but let me define each chemical reaction:

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a + b ---> ab   In synthesis elements/compounds come together to form new                compounds

Decomposition:

ab ---> a + b   In decomposition a compound breaks down to form 2 elements/compounds

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Double replacement

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Now, let's go through the assignment

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2. HgO ---> Hg + O2  This is a decomposition reaction because HgO broke into separate elements Hg and O.

3. Cl2 + NaBr ---> NaCl + Br2  This is a single replacement reaction because chlorine (Cl) replaced the spot of bromine (Br) to bond with sodium (Na).

4.  Mg + O2 ---> MgO  This is a synthesis reaction because two elements (Mg and O) came together to form one compound.

5. Al2O3 ---> Al + O2  This is a decomposition reactions because Al2O3 broke into separate elements Al and O.

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<em>I hope this helps!!</em>

<em>- Kay :)</em>

7 0
3 years ago
Which of the following measurements are listed in the proper mathematical relationship?(Select all that apply)
Igoryamba

The measurements which are listed in the proper mathematical relationship include:

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<h3>What is a Constant?</h3>

This is used in mathematical expressions and has a constant value which doesn't change in expression.

Options A,B and C have the appropriate constants as pressure is usually multiplied by volume.

Read more about Constant here brainly.com/question/15989275

#SPJ1

8 0
2 years ago
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