eQuizShow

7bscience3

pure substance and mixtures

Question: what is a pure substance and a mixture
Answer: a pure substance is a substance that is composed of one element and a mixture is something that is composed of more than one element or substance

Question: how can you figure out its a solution?
Answer: the particle can be seen by a magnifying glass, its transparent, the solution particles do not settle to the bottom or float to the top

Question: what is a solute and what is a solvent?
Answer: A solute is the substance that is dissolving in a liquid and the solvent is the substance that does the dissolving.

Question: how does a solution form?
Answer: a solution is formed when a solute and solvent are placed together and then you have a solution

Question: why is tap water a solution and why is pure distilled water a pure substance
Answer: because tap water has extra particles inside and distilled water is pure h20

The particle theory

Question: name 2 rules of the particle theory?
Answer: temperature affectes the speed that particles move,


there are space between particles

Question: what do particles look like when they are heated
Answer: they begin to move faster and they sorta go crazy

Question: what does do particles look like in a liquid and a gas
Answer: particles in a liquid are more spread out but they are not extremely spread out in a gas are extremely spread out and all over the place.

Question: What are the forms of attraction between solid particles.
Answer: they have a strong force of attraction

Question: what is the particle theroy
Answer: the particle theory is a kinetic theory of matter that explains the way particles move and react

solutions

Question: what is the Universal solvent
Answer: water

Question: what causing water to heat up faster causing a supersaturated solution ?
Answer: Heat

Question: Why is water the universal solvent
Answer: water is the universal solvent because it has a space for the particles to go into

Question: what are the three things that impact the rate of dissolving?
Answer: Heat, stirring, and particle size

Question: Why are some solutes soluble in some solvents but INSOLUBLE in others?
Answer: - There are not enough space between particles
- Low attractive forces

bonus

Question: what is the disadvantage of a beam bridge?
Answer: it only spans a short distance

Question: how to create a super staurated solution
Answer: You must heat it up

Question: what is something that is insoluble and describe insoluble
Answer: it is unable to dissolve in when solvent is put it

Question: use the particle theoryhow does temeprature affect rate of which somthing dissolves
Answer: the paricle theroy states that teeprature affects the speed at which the aprticles move, so when it moves faster it creeaste dmore space beween prticels

Question: what famous west virgina bridge was built using the cable method?
Answer: the new river bridge!

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