Curriculum
Course: Alhussan Chemistry — Stage 7
Login

Curriculum

Alhussan Chemistry — Stage 7

Chapter 1: The Particle Model and States of Matter

0/34

Chapter 2: Elements, Compounds and Mixtures

0/57

Chapter 3: Metals and Non-Metals

0/32

Chapter 4: Chemical Reactions 1

0/28

Chapter 5: Acids and Alkalis

0/33

Chapter 6: The Earth and Plate Tectonics

0/18
Quiz

2.3 Chemical symbols — 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: 2
  • Passing grade: B+
Start Quiz
1.
Look at the chemical reagent bottle showing international hazard warning symbols. What does the flame symbol indicate?
Dr Dabour Hub Academy - figure 1
The substance is flammable and easily catches fire if exposed to sparks or heat
The substance is corrosive and burns skin on contact
The substance is radioactive and emits harmful rays
The substance is non-hazardous and safe to consume
2.
Examine the chemical symbols on the Periodic Table chart (e.g., Fe for iron, Na for sodium). Why do some element symbols not match their modern English names?
Dr Dabour Hub Academy - figure 2
Their symbols are derived from their ancient Latin names (e.g., Ferrum for iron, Natrium for sodium)
The symbols were assigned randomly by a computer generator
The letters represent the initials of the scientists who discovered them
The symbols change every year depending on international conferences
  • 1
  • 2
Part of Chapter 2: Elements, Compounds and Mixtures — see every lesson and quiz in this unit.
Accepted payment methods