Science 7 - Chemistry

When the temperature of the environment decreases, the boiling point of the pure substance will _________.

• double

• decrease

• increase

• stay the same

What type of mixture is a solution?

• heterogeneous

• homogeneous

• immiscible

• all of the above

Which of the following is a mixture?

• salt

• sugar

• water

• sugar and water

Which of the following can be used for Quantitative data collection?

• Arrangement

• Color

• Temperature

• Texture

Which of the following is the chemical name for table salt or asin?

• sodium hydroxide

• sodium chloride

• sodium bicarbonate

• aluminum chlorohydrate

What do you call an educated guess based on one's observation?

• conclusion

• hypothesis

• problem

• variable

What volume of concentrated solution of potassium hydroxide (6.00M) must be diluted to 200 mL to make a 0.880 M solution of potassium hydroxide?

• 50.0 mL

• 17.6 mL

• 26.4 mL

• 29.3 mL

Which of the following substances is an element?

• air

• iron

• sugar

• salt

The following substances are examples of compound EXCEPT:

• ammonia

• helium gas

• table sugar

• hydrogen peroxide

Which of the following will boil at a changing temperature?

• mercury

• seawater

• pure ethanol

• distilled water