When an atom loses electrons, it becomes positively charged. What do you call the type of ion that is formed when an atom loses electrons?

Formaldehyde (CH2O) is utilized in preserving organic materials such as animal specimens and embalming human cadavers. What class of organic compounds does formaldehyde belong to?

What is the percentage of oxygen in carbon dioxide, CO2? (Atomic mass of C = 12.01 amu, atomic mass of O = 16.00 amu). Answer should be reported with 2 decimal places.

Which of the following structural formula of compounds is an example of the functional group alcohols?

The percentage by mass of each element in a compound can be derived from its chemical formula. What is the general formula for the computation of percentage composition of the given element?

 In a chemistry class, you learn that the molar mass of water (H₂O) is 18 g/mol. If you have 2 moles of water, what is the total mass? Please indicate the unit in grams.

The mole is a basic unit in chemistry used to count particles like atoms and molecules. What does one mole of any substance represent?

Carbon, a non-metallic element with atomic number 6, is unique due to its ability to form stable chemical bonds with various elements. What is the maximum number of bonds a carbon atom can form? (Note: answer should be a number)

Understanding the capacity of each subshell is crucial for determining the electron configuration of elements. What is the maximum number of electrons that can occupy a d subshell? (Note: Answer should be a number only)

What type of bond is formed between carbon atoms in a molecule of ethyne (C₂H₂)? (Note: Answer in ALL CAPS/ CAPITAL LETTERS)