Exploring Chemistry Fundamentals for Secondary Science

In the final episode of the introduction to science series, the focus is on chemistry, specifically on how to make a flare. The lesson covers using a Bunsen burner safely, conducting a flame test, and understanding variables. It explains chemical reactions and their everyday applications, such as in cooking and fireworks. The practical involves testing metal compounds to determine the best for flares. The episode concludes with a discussion on the results and encourages viewers to engage with future content.

What is the main focus of today's lesson?

• Mathematics

• Chemistry

• Physics

• Biology

Tags

NGSS.MS-LS1-1

NGSS.MS-LS2-1

NGSS.MS-PS2-1

NGSS.MS-PS3-1

Which of the following is NOT an indicator of a chemical reaction?

• Change in color

• Change in shape

• Change in temperature

• Fizzing or bubbles

Tags

NGSS.MS-PS1-2

Which of these is an everyday use of chemistry mentioned in the video?

• Fireworks

• Gardening

• Sculpting

• Painting

What is the first step in performing a flame test?

• Place the splint in the flame

• Turn on the Bunsen burner

• Dip the splint in water

• Write down observations

What is the independent variable in the flame test experiment?

• The metal compounds used

• The color of the flame

• The time in the Bunsen burner

• The amount of chemical

Tags

NGSS.MS-ETS1-1

What is the dependent variable in the flame test experiment?

• The time in the Bunsen burner

• The amount of water

• The color of the flame

• The metal compounds used

Tags

NGSS.MS-PS1-2

What should you do after placing the splint in the flame?

• Turn off the Bunsen burner

• Change the metal compound

• Dip the splint in water again

• Write down observations

What color does potassium produce in a flame test?

• Green

• Lilac

• Yellow

• Red

Which metal produces a green flame?

• Sodium

• Lithium

• Copper

• Calcium

Which metal produces a yellow flame?

• Potassium

• Lithium

• Calcium

• Sodium