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?
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?
