When studying for the upcoming Science test, you might want to consider studying notes, old worksheets etc. You might want to take a look at the following questions as well. Check back, they may change:
Chemical and Physical changes
1. A physical change is a change in the physical properties of matter, such as a change in __________, _____________, or __________ of matter without the matter changing chemically.
2. In physical changes you have the same matter ____________ and _____________ the change.
3. A chemical _______________ is a way to describe how matter reacts with other matter.
4. Flammability means that the matter has the ability to ____________.
5. Another clue that a chemical change has occurred when paper is burned in that ____________ is given off.
6. A chemical ____________ is the process by which a certain substance becomes a different substance.
7. In a chemical change a ____________ substance is formed.
Identify if each example is a physical or chemical change. Use P for physical and C for chemical.
8. A saw cuts a log and creates sawdust - ____
9. Electricity from a battery causes a light bulb to light - _____
10. Mixing sugar and powdered drink mix - ____
11 The process of rusting is a ____________ chemical change. When ____________ reacts with oxygen in the air, it corrodes creating a new substance.
12. ___________________ is another slow chemical change that occurs when living things are broken down.
13. The burning of logs is an example of a ____________ chemical change. Many of the chemical changes in our ____________ and the _________________ of dynamite are fast chemical changes.
14. A chemical ________________ is a chemical change in which one or more substances is changed.
15. __________________ is an important chemical reaction in plants that is used to produce energy for the plant.
Questions
1. When a substance can be pulled into a wire
2. Properties that are the same no matter what size the sample is
3. Ability of a substance to burn
4. When a substance can be dissolved into another substance
5. Anything that has mass and takes up space
6. Curve at a liquid’s surface by which one measures the volume of the liquid
7. Rate at which a substance can transfer heat
8. The ability of two or more substances to combine and form one or more new substances
9. This physical property is helpful in making alarm systems
10. When the odor changes this is a sign of a physical or chemical change?
11. The amount of energy needed to change the temperature of 1 kg of a substance 1°C
12. Calculate the density for this object. Mass: 100 g Volume: 15cm3
13. Tendency of an object to resist a change in motion
14. How do you find the volume of an irregular shaped solid
15. What unit do you measure the volume of a liquid
16. Ability of a substance to be rolled or pounded into sheets
17. When a gas is produce this is a sign of a physical or chemical change?
18. Which is it easy to reverse changes of a physical or a chemical
change?
19. This physical property is helpful when getting a soda from a soda machine
20. This physical property is helpful in creating materials that dissolve to reduce waste in landfills
21. Bending a nail, is that a physical or a chemical change?
22. The physical form in which a substance exists (solid, liquid, gas)
23. Measure of the gravitational force exerted on an object
24. Measure of the amount of matter in an object
25. Which is always the same no matter where you are, mass or weight?
26. What is the equation to find the volume of a regular shaped object?
27. Which physical property would be helpful to me during a fishing trip?
28. Which would have more inertia, a brick or a banana?
29. What are the units for volume of a solid?
30. What tool do we use to measure weight?
31. What are the units for measure the density of a solid?
32. Firework exploding in the air is a physical or chemical property?
33. If given two objects that look similar what could you use to identify these two objects from each other?
34. What is the SI unit for weight? What is the SI unit for mass?
35. Is frying an egg, chemical or physical change?
36. Name the two chemical properties that were discussed in Ch 5
37. Given the densities of the following liquids put them in order greatest to least.
Gas--0.70 g/ml Mercury—13.6 g/ml Milk—1.03 g/ml
Water—1.0 g/ml
38. Name two practical uses of electrical conductivity in our everyday lives.
39. Name two chemical changes that could be done to a tree.
40. Name two physical changes that could be done to water.
