6 th grade review 2 nd six weeks exam

6th Grade Review2nd Six Weeks Exam

6.5A1. Which of these is not an element?A) PbSB) CrC) PD) MnE) ZnF) Ca

6.5C4. Identify which is not a compound.

A) NaClB) AuC) PbSD) ZnS

5. What is the difference between mass and weight?

A) Weight stays the same despite your location

B) Mass stays the same despite your location

C) Mass and weight are the same except for their units

D) You can change your weight by working out but not your mass

A) 3B) 24C) 6D) 1

6.5A

6. Identify the number of elements in this chemical formula: C6H12O6

A) Copper and NitrogenB) Nickel and OxygenC) Aluminum and HeliumD) Silicon and Oxygen

6.5B

7. What two elements is the Earth’s crust mainly composed of?

A) Compounds are made of two or more physically bonded substances

B) Compounds cannot be broken down into smaller substances

C) Elements only contain one substance, considered to be pure

D) Elements are composed of compounds

6.5C

8. Which of the following describes the difference between a compound and an element?

6.69. Color, hardness, malleability, luster and magnetism are all _____.

A) Physical propertiesB) Qualitative observationsC) Chemical propertiesD) A and B

6.6A11. This object is silver, lustrous, solid at room temperature, and good conductor of heat and electricity. What is it?

A. MetalloidB. NonmetalC. MetalD. None of the above

6.5B12. A limited number of these is found in Earth, cells, oceans, and atmosphere. What are they?

A. MetalsB. CompoundsC. ElementsD. Energy types

6.1B13. When is it appropriate to dispose of a chemical down the drain?

A. only if the chemical is a liquidB. only if the chemical is unusedC. NeverD. only if the MSDS sheet says to

6.6A19. An element that has properties of both metals and nonmetals is most likely to be represented in

A. blue B. green C. yellow D. all of the above

B

6.6B

20. Matt had 156 grams of a substance and it took up 20 cm³ of space. The substance was

A) Aluminum (Al)

B) Mercury (Hg)

C) Iron (Fe)

D) Gold (Au)

Densities of Common Substances

Element or Compound

Densityg/mL

Aluminum, Al 2.7 Water, H2O 1 Salt, NaCl 2.16

Mercury, Hg 13.5 Iron, Fe 7.80

Gold, Au 19.30

6.2A18. A student asked, “Why do 7th graders dissect frogs if they are learning about the human body?” Which of the following did the teacher probably say in response?

A.You’re right. They should just watch a movie about the human body

B.They just dissect frogs because it is fun!C.The body of the frog is a lot like the human

body so it’s a good model.D.The teachers wanted to dissect humans, but

they were too expensive.

6.2B 19. A student wants to know if listening to classical music can really make you smarter. What should she do to find out?

A. ask the school band director if it’s trueB. listen to classical music one time and see if

she feels smarterC. ask the smartest kids in her class if they

listen to classical musicD. switch to only listening to classical music

and compare her test scores

6.6AB20. True or False

Panning for gold works because gold is more dense than the other materials so it sinks to the bottom of the pan.

TRUE

6.6B22. The amount of mass in a given volume describes ______:

A) DisplacementB) Gravity C) Weight D) Density

6.4A/6.2C23. The length of the rock is:

A) 8.5 cmB) 4.0 cmC) 5.5 cmD) 8.0 cm

6.4A/6.2C24. What is the volume in the graduated cylinder?

A) 38 mLB) 36 mLC) 35 mLD) 45 mL

6.4A/6.2C25. What is the mass of the object measured on this triple beam balance?

A) 323.8 gB) 233.5 gC) 320.4 gD) 432.0 g

1 2 3 4 5 6 7 8 9 10 g0

10 20 30 40 50 60 70 80 90 100 g0

100 200 300 400 500 g0

6.5D

28. A group of students conducted an experiment where they combined two unknown powders with vinegar and recorded their observations in the given table. What observation is evidence that Powder A is a different compound than Powder B?

A A gas is formed.

B The temperature changes.

C The crystals dissolve.

D The baggie changes in shape.

6.4A

30. A triple beam balance scale is used to measure

A. the size of a paperclip.

B. the density of solids.

C. the volume of a rock.

A. the size of a paperclip.

D. the mass of an orange.

6.4A/6.2C

31. The volume of your pencil is measured in

B. milliliters

C. milligrams

D. kilometers

A. cubic centimeters

6.4A

32. Temperature measures

A. gaseous composition

B. how fast molecules are moving

C. energy transfer

D. speed of the sun’s rays

33. A decrease in molecular motion causes

A. popsicles to freeze.B. Water to boilC. Butter to meltD. Vaporization of

alcohol

6.6B

34. A rubber ball sank in tap water. The same rubber ball floated in salt water. What does this mean? A. The ball is denser than tap

water.B. Salt water is denser than the

ball.C. Tap water is denser than salt

water.

6.5D

36. On your lab sheet, you wrote that when the substances were mixed, they created bubbles. The bubbles were proof of a chemical change because they were a

A. clear color

B. hypothesis

C. mixture

D. new substance

40.Which graph matches the data shown?

A.

B.

C. Neither graph show the data

Which step in these instructions for making baking a cake results in a chemical change? 

First, crack two eggs into a bowl.Then, add one tablespoon of milk and mix well.Pour the raw egg mixture into a hot nonstick frying pan.Cook the batter until it is a solid.  

a. cracking the eggb. adding in milk

c. pouring the mixtured. baking the batter

Which of the objects shown below has the highest density? a. The iron bar b. The iron nail c. The iron ball bearings d. The density is the equal for all objects

What is the most abundant element that makes up most of the Earth’s crust?

a. Aluminumb. Ironc. Oxygend. Silicon

6.6A (S)18. The four objects shown above are placed into a container of water. Objects 3 and 4 sink in the water while objects 1 and 2 float. The physical property responsible for the sinking and floating of the objects is ___ .

a. shapeb. massc. volumed. density

A cube has a mass of 200 grams and a volume of 10 cubic centimeters. What is the density of the cube?a. .5 g/cm3b. 20 g/cm3c. 2000 g/cm3d. 200 g/cm3

An engineer is designing a submarine to go to the bottom of the ocean. Which factor is most important for the engineer to consider in their model?

a. wind speedb. soil thicknessc. water pressured. air temperature

A student places an ice cube on a plate and puts it on a sunny windowsill for a week. Most likely, the physical state of the ice cube will change from___ .

a. solid → gasb. solid → liquid → gasc. liquid→ gas→ liquidd. solid → liquid

How many atoms are in the following formula? NaS2O2

a. 3b. 4c. 5d. 6

A student puts water in a graduated cylinder and carefully adds two small rocks. What is the volume of the rocks?

a. 2 cm3b. 3 cm3c. 5 cm3 d. 12 cm3