Chemistry, 02.09.2019 08:30 sheilashair

Which description best characterizes the motion of particles in a solid
slow but able to move past one another
fast and widely spaced
not moving
vibrating around fixed positions

Answers: 2

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Answers

Answer from: davidswafforddd478

Option (D) is the correct answer.

Explanation:

The particles in a solid are arranged in a fixed position as they are tightly packed but still they move in the form of vibrations.

The particles of solid vibrate around their fixed positions. When we increase the temperature, the molecules get excited and the vibration increases such that it over comes the forces of attractions.

As a result, the lattice breaks and the state of system changes.

Answer from: jeffcarpenter

vibrating around fixed positions

Explanation:

Solids have fixed shape and volume. This is because particles are tightly packed in solids. The particles cannot move past each other. The inter-particles space is negligible and the particles can only vibrate around their fixed position. With increase in temperature, the particles vibrate faster about their positions. The collision among the neighboring particles helps to conduct energy. The particles of liquid and gas can move around. Liquids have fixed volume but not shape.

Answer from: Quest

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

Answer from: Quest

2b2t

explanation:

2b2t

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Which description best characterizes the motion of particles in a solid
slow but able to move...