Exploring Periodic Trends in Chemistry

What is the main purpose of the periodic trends lab?

• To observe the patterns in the periodic table.

• To test the properties of noble gases.

• To study the reactivity of non-metals.

• To learn about the history of the periodic table.

Tags

NGSS.HS-PS1-1

Which two metals are compared to observe trends in the alkaline earth metals group?

• Barium and Strontium

• Magnesium and Calcium

• Magnesium and Aluminum

• Calcium and Strontium

What type of litmus paper is used in the water reaction test?

• Pink litmus paper

• Blue litmus paper

• Green litmus paper

• Red litmus paper

What observation indicates a chemical reaction with calcium in water?

• No change in litmus paper color

• Formation of bubbles and white residue

• Litmus paper turns red

• No visible reaction

Tags

NGSS.MS-PS1-2

What is the primary evidence of a reaction when metals are tested with hydrochloric acid?

• Change in color

• Formation of a precipitate

• Presence of a gas and temperature change

• No visible change

Tags

NGSS.MS-PS1-2

Which metal showed the most significant temperature change when reacted with hydrochloric acid?

• Calcium

• Magnesium

• Aluminum

• Strontium

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is a precipitate in a chemical reaction?

• A color change in the solution

• A liquid that evaporates

• A solid substance that forms when two solutions are mixed

• A gas that forms during the reaction

Which solutions are used to test the reactivity of alkaline earth metals in the third part of the lab?

• Sodium chloride, sodium sulfate, and sodium hydroxide

• Sodium carbonate, sodium sulfate, and sodium hydroxide

• Sodium carbonate, sodium chloride, and sodium hydroxide

• Sodium carbonate, sodium sulfate, and sodium chloride

What should students do if they have questions about the lab?

• Search online for answers

• Wait until the next class

• Ask their classmates

• Contact the teacher by email or Google Meet

How should students rank the reactions in the third part of the lab?

• By the temperature change observed

• By the amount of precipitate formed, from most to least

• By the amount of gas produced

• By the color change observed