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WorksheetsMatter 2 Review CMS
Total questions: 10
Worksheet time: 5mins
Students at CMS dissolved Copper Sulfate in water, a blue/ green mixture was formed. After sitting the the mixture in the window overnight what happened?
The mixture was unchanged.
The mixture turned clear.
A chemical change occurred, the water disappeared and a new substance was created.
The water evaporated and the Copper Sulfate crystals formed, which is a physical change.
During a science experiment at school, Ms.Lee mixed baking soda and vinegar in front of her students. What evidence did she observe to determine a chemical change was occurring?
Bubbling/fizzing
Nothing mixing is a physical change.
She saw it.
Jacob wanted to see if temperature affected the rate of a chemical reaction. He mixed 1 tablet of alka seltzer with each temperature of water: hot, warm and cold. What should his conclusion be?
Temperature does not affect the rate of reaction.
Cold water causes the molecules to move slower and produces a better chemical reaction.
The hot water increases the kinetic energy of the molecules therefor increasing the rate of the reaction.
There is not enough information to answer this question.
In lab students dropped an alka seltzer tablet in three different beakers of water. Beaker 1 water temperature was 210 F, Beaker 2 water temp was 72 F and Beaker 3 water temp was 40 F. What result would you expect?
The beaker with the 40 F water temperature dissolved the tablet faster.
The rate of reaction was faster for the beaker of water that measured 210 F and alka seltzer tablet.
There wasn't a measurable difference in the rate of reaction between the alka seltzer and the three beakers of water.
The beaker with the room temperature water had a faster rate of reaction.
Three beakers containing 100 mL of water are sitting on the lab table. Beaker 1 has a higher temperature than beaker 2 and beaker 3 has a higher temperature than beaker 1. Which beaker has the faster moving molecules?
Beaker 1
Beaker 2
Beaker 3
They are all the same because they have the same amount of water 100 mL.
Ben wants to module how the motion of particles changes with temperature. He decides to put water in a pot. Ben draws a model to show how the water particles move at room temperature. Then he draws a second model to show how the water particles move as the water is heated. Based on this evidence, how should Ben's second model differ from the first.
The water particles should vibrate past each other faster.
The water particles should slide past each other faster.
The water particles should move freely past each other faster.
The water particles are not affected.
Which state of matter has a definite volume and shape and the particles vibrate next to each other?
Solid
Liquid
Gas
Evaporation
John had a small log that had a mass of 350 g. After burning the log he records the mass of the ashes left behind. The mass of ashes is 340 g. Which statement best explains the change in mass.
Some mass is destroyed during a chemical reaction.
Some ash and gases escaped into the air, but no mass was destroyed.
The ashes are a new substance and is lighter that the original log.
The ash is made of new atoms that were created during the chemical change.
Matter can change states when heat is added or removed. When you sit a cold glass of water out on the counter and liquid forms on the out side of the glass, where did the water come from.
The water came from inside the glass.
The water evaporated out of the glass.
The ice sublimated.
Condensation formed on the outside of the glass due to the warm air molecules cooling.
What is one thing solids, liquids and gases have in common?
Particles are constantly moving.
The shape depends on the container.
Particles are spaced far apart.
They do not take the shape of the container.
