Which of these is a physical property: oxidation, density, flammability, combustibility?
What is density.
100
A fire is an example of the chemical property of ?
What is flammability/combustibility
100
Which of these changes is NOT physical: freezing, dissolving, burning, or evaporating?
What is burning.
100
Fix what is wrong with this sentance: Matter is made up of motionless particles.
What is motionless should be moving
100
How does the mass of objects after a chemical reaction compare to their mass before the chemical reaction?
What is they are the same
200
The temperature at which water boils is called what??
What is the boiling point
200
Matter may be found in the plasma state in what?
What is flourescent lighting and lightning
200
Scratching a silver spoon is what kind of change?
What is physical change
200
Density depends on which 2 things?
What is mass and volume
200
The mass of an apple would be measured in ??
What is grams
300
Sorting and separating are ways to classify matter based on what kind of properties
What is physical properties
300
It can be difficult to classify a substance with these kinds of properties because a substance must be changed to observe these properties
What is chemical properties
300
A cake baking is an example of what kind of change?
What is chemical change
300
You can separate sugar from sand because sugar is ?? and sand is not
What is soluble in water
300
You pour soda into a glass, bubbles form and flow to the top of the glass. You wait 5 minutes. The mass of the glass with the soda is less 5 minutes later than it was when you first poured the soda in the glass. Is this an exception to the law of conservation of mass? Explain
What is No, the missing mass escaped as the bubbles in the soda.
400
What are the 4 states of matter?
What is solid, liquid, gas, and plasma
400
A substance's ??? properties predict how it will react with other substances.
What is chemical
400
You need to paint iron lawn furniture that has been left outisde. What property of iron makes this necessary? If the paint chipped what happens?
What is iron reacts when exposed to oxygen and if chipped it will rust.
400
The density of water at room temperature is ?
What is 1g/cm3
400
How could you prove that the law of conservation of mass is obeyed when mixing two chemicals?
What is measure the mass of both chemicals before mixing and compare that to the mass of the new substance after mixing.
500
How do the energy particles differ in solids, liquids, and gases?
What is They all move, solids vibrate in a fixed place, liquids move slightly faster, sliding over each other, and gases move very quickly and are far apart.
500
Flammability is what kind of property?
What is chemical
500
Is whipping cream a chemical or physical change - why?
What is physical, because the cream is still cream it is just in a semi-solid form instead of liquid form.
500
If you have a box that has the dimensions of (see board) and use a scale to find the mass of the box is 4 grams, what is the density of the box? (You must show your work for full credit)
What is 4g/20cm3 or 1g/5cm3
500
How does the law of conservation of mass apply to a log before and after it is burned into ashes?
What is the mass of the log is equal to the mass of the ashes and all gases/smoke that were released while it was burning.