Curriculum
Course: Alhussan Chemistry — Stage 8
Login

Curriculum

Alhussan Chemistry — Stage 8

Chapter 7: Inside Atoms

0/25

Chapter 8: Pure Substances and Solutions

0/45

Chapter 9: Chemical Reactions 2

0/55
Quiz

9.1 More chemical reactions — Visual & Photo Quiz

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 1
  • Passing grade: B+
Start Quiz
1.
Look at the photograph of the dramatic chemical reaction between zinc metal powder and yellow sulfur heated on a heatproof mat. What observation confirms a new substance has formed?
Dr Dabour Hub Academy - figure 1
A fierce flash of light, release of intense heat, and formation of a white smoke residue (zinc sulfide)
The sulfur melts reversibly without changing color
Zinc turns into pure gold metal
No heat or light is produced
Part of Chapter 9: Chemical Reactions 2 — see every lesson and quiz in this unit.
Accepted payment methods