Question 1

Which of the following best describes the relationship between matter, chemical elements, and atoms as depicted in the first image?

Accepted Answer

Matter is composed of chemical elements, which are made of atoms.

Question 2

Based on the second image, which of the following statements is correct regarding the composition of a diamond and a honey bee?

Accepted Answer

A diamond is composed of only carbon atoms, while a honey bee contains molecules with carbon, hydrogen, and oxygen.

Question 3

Referencing the third image, which subatomic particle has a negative electric charge and is found orbiting the nucleus?

Accepted Answer

Electron

Question 4

According to the fourth image, which subatomic particle is positively charged and located in the nucleus?

Accepted Answer

Proton

Question 5

Based on the periodic table in the fifth image, which elements are considered trace elements essential for life?

Accepted Answer

Elements highlighted in blue

Question 6

Using the sixth image, what is the atomic number and mass number of a carbon atom with 6 protons and 6 neutrons?

Accepted Answer

Atomic number = 6, Mass number = 12

Question 7

Refer to the seventh image. Which element among CHNOPS has the highest number of electrons in its outer shell?

Accepted Answer

Oxygen

Question 8

The eighth image illustrates a rule that explains why atoms react to fill their outermost shell. What is this rule called?

Accepted Answer

Octet Rule

Question 9

Based on the ninth image, why is neon (Ne) chemically unreactive?

Accepted Answer

Its valence shell is full.

Question 10

Referencing the tenth image, how many protons does an oxygen atom have?

Accepted Answer

8

Question 11

According to the eleventh image, what is the average atomic mass of carbon based on its isotopes?

Accepted Answer

12.011

Question 12

The twelfth image shows a radioactive atom. What is released during radioactive decay?

Accepted Answer

Energy and particles

Question 13

Based on the thirteenth image, which of the following is a real-world application of radioactive isotopes?

Accepted Answer

Medical imaging and dating fossils

Question 14

The fourteenth image shows the chemical formula for glucose. What does the formula $$\mathrm{C_6H_{12}O_6$}$$ indicate?

Accepted Answer

There are 6 carbon, 12 hydrogen, and 6 oxygen atoms in one glucose molecule.

Question 15

According to the fifteenth image, what is the difference between intramolecular and intermolecular bonds?

Accepted Answer

Intramolecular bonds occur within a molecule; intermolecular bonds occur between molecules.

Question 16

The sixteenth image shows two HF molecules interacting. What type of bond is formed between the two molecules?

Accepted Answer

Intermolecular hydrogen bond

Question 17

Based on the seventeenth image, what do the $$\delta^+$$ and $$\delta^-$$ symbols represent in a molecule?

Accepted Answer

Partial positive and partial negative charges due to unequal electron sharing

Question 18

Referencing the eighteenth image, which type of chemical bond involves equal sharing of electrons?

Accepted Answer

Nonpolar covalent bond

Question 19

According to the nineteenth image, what type of bond is depicted by the tug-of-war with unequal sharing?

Accepted Answer

Polar covalent bond

Question 20

Based on the twentieth image, which of the following is a strong type of noncovalent bond?

Accepted Answer

Hydrogen bond

Chemistry Comes Alive: Atoms, Elements, and Chemical Bonds

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