1.2 Matter And The Branches Of Chemistry

2. What do all chemists do?

They all smoke cigarettes

They study the elements of life

They mix chemicals

They study matter

Since chemistry is the study of matter and how it changes, all chemists study matter. They may only study gold for example, which is not an element of life. They may be physical chemists, meaning they have no need to mix chemicals. Hopefully very few of them smoke cigarettes

Explanation

Since chemistry is the study of matter and how it changes, all chemists study matter. They may only study gold for example, which is not an element of life. They may be physical chemists, meaning they have no need to mix chemicals. Hopefully very few of them smoke cigarettes

3. Which of the following is an example of matter?

Happiness

Energy

A proton

Velocity

A proton has mass and takes up space so it is an example of matter; albeit a small amount. The others are not matter-based and therefore are not examples of matter

Explanation

A proton has mass and takes up space so it is an example of matter; albeit a small amount. The others are not matter-based and therefore are not examples of matter

4. match the word with the type of chemist

analysis

synthesis

medicine

physical

plastics

carbon

This question shows how the type of chemist is really given away by the word
For example
physical chemists are interested in physical, not chemical processes
analytical chemists analyze substances
synthetic chemicical perfrom chemical reactions; they synthesize
polymers are plastics
carbon-based chemistry is organic chemistry

Explanation

This question shows how the type of chemist is really given away by the word
For example
physical chemists are interested in physical, not chemical processes
analytical chemists analyze substances
synthetic chemicical perfrom chemical reactions; they synthesize
polymers are plastics
carbon-based chemistry is organic chemistry

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5. A chemist walks into his laboratory, and mixes some chemicals, then using a device known as a NMR (nuclear magnetic resonance) spectrometer determines the structure of his new substance, which he finds is a useful medicine. In chronological order, what three types of chemist has he behaved as?

Organic, analytical, medicinal

Synthetic, polymer medicinal

Combinatorial, analytical, synthetic

Synthetic analytical, medicinal

He is a synthetic chemist while mixing chemicals, analytical while analyzing them by NMR and medicinal while determining that he has made a useful drug

Explanation

He is a synthetic chemist while mixing chemicals, analytical while analyzing them by NMR and medicinal while determining that he has made a useful drug

6. What is matter?

Anything that has mass

Anything that has mass or takes up space

Anything that has mass and volume

As the word implies, matter is anything that is important

matter is defined as anything that has mass and takes up space. Note the only reason to include the volume (taking up space) requirement is for oddball situations that may be hypothetical only such as a black hole (all mass and no volume) or a perfect vacuume (volume but no mass). Most chemists might think that all matter is important but that's just an opinion.

Explanation

matter is defined as anything that has mass and takes up space. Note the only reason to include the volume (taking up space) requirement is for oddball situations that may be hypothetical only such as a black hole (all mass and no volume) or a perfect vacuume (volume but no mass). Most chemists might think that all matter is important but that's just an opinion.