Foundations in Chemistry Random Retrieval

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Foundations in Chemistry Random Retrieval

This quiz contains all the questions in the Foundations in Chemistry section. The website will pick 10 questions at random.

1 / 10

In the half equation: MnO4- (aq) + 8H+(aq) + ne- -> Mn2+(aq) + 4H2O(l) the value of n is:

2 / 10

What is the concentration of hydroxide ions in a 0.050 mol dm-3 solution of barium hydroxide?

3 / 10

Which of these elements has a relatively low boiling point (below 500 oC)?

4 / 10

Which of the following is not a typical property of most metals:

5 / 10

Which of these molecules are overall polar?

(i) CH3Cl

(ii) CH2Cl2

(iii) CHCl3

(iv) CCl4

6 / 10

Which of these sets of properties is that of a substance which is molecular?

7 / 10

What is the electronic configuration of scandium? Enter your answer in the following format 1s2 2s2 etc. (note the space between each sub-shell!) Follow the aufbau order of sub-shell filling.

8 / 10

How many p electrons are there in the outer shell of a halogen atom?

9 / 10

E represents an atom of an element in the equation: E(g) -> E+(g) + e– Which of these statements is/are true:

(i) the element must be a metal

(ii) the enthalpy change for this process is the first ionisation energy of the element

(iii) the element must be a gas at room temperature.

(iv) this process occurs in a mass spectrometer used to analyse the element

10 / 10

How many neutrons are there in an atom of boron with mass number 9 and atomic number 4?

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