CHE1504 Assignment1 memo 2024

28/08/2024, 08:48 As




UNISA  2024  CHE1504-24-Y  Welcome to CHE1504  Assessment 1

QUIZ




Started on Tuesday, 9 April 2024, 9:50 PM
State Finished
Completed on Wednesday, 17 April 2024, 12:36 AM
Time taken 7 days 2 hours
Grade 84.00 out of 100.00


Question 1 Which of the following statements about elements is true?
Incorrect

Mark 0.00 out of a. Elements can be broken down into simpler types of matter.
4.00
b. Elements always consist of individual atoms. 

c. Elements can only exist as molecules.

d. Elements can be classified as metals or non-metals.




Your answer is incorrect.

The correct answer is:
Elements can be classified as metals or non-metals.

, 28/08/2024, 08:48 As


Question 4 How can mixtures be separated into their pure components?
Correct

Mark 4.00 out of a. By breaking chemical bonds
4.00
b. By using physical methods like filtration or distillation 

c. By undergoing a chemical change

d. By changing the temperature and pressure




Your answer is correct.
The correct answer is:
By using physical methods like filtration or distillation




Question 5 What type of change occurs when a compound is broken down into its component elemen
Correct

Mark 4.00 out of a. Physical change
4.00
b. Chemical change 

c. Nuclear change

d. Phase change




Your answer is correct.
The correct answer is:
Chemical change





Question 6 What happens to the properties of elements when they combine to form compounds?