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Chemistry

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Haylee Leannon

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Cards in this guide (9)
Why are alloys useful

Alloys are useful (if this is what the question is getting at) because mixing elements of the periodic table alters their colligative properties.

i.e. mixing two metals could change substance's melting point, allowing it to more easily resist high temperatures. Also, mixing metals can change the way they bind together, and create an altogether stronger material than you can find using any single metal alone.They can improve a metal's properties

What did the progressives support

Progressives were interested in establishing a more transparent and accountable government which would work to improve U.S. society. These reformers favored such policies as civil service reform, food safety laws, and increased political rights for women and U.S. workers.

What forces hold network solids together

All chemical bonds, including those found in network solids, derive from the electromagnetic force. Positively charged protons attract negatively charged electrons. Although atoms start off with an equal number of protons and electrons, and are therefore electrically neutral, the electrons rearrange themselves in ways that create attractions between atoms. Covalent bonds

What factors are included on a phase diagram

Temperature and Pressure

How does the activity series of metals tell which reactions will occur

Metals higher in the series will replace metal ions in solution that are lower in the series

What structural units make up ionic solids

ions

Which of the following could a magnet float over network solid semiconductor superconductor molecular solid

A superconductor.

What usually has lower melting points than ionic solids

Molecular solids

Which of the following is an example of a heterogeneous mixture water saltwater dirt or brass

Dirt is a heterogeneous mixture.

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