Question

Match the name in column 1 with the chemical symbol in column 2 Column 1 a. hydrogen b. cobalt c. potassium d. bromine e. barium f. sulfur g. silver h. sodium i. helium ¡. carbon Column 2 1\. He 2\. \(\mathrm{H}\) 3\. Na 4\. So 5\. \(\mathrm{Ag}\) 6\. \(\mathrm{S}\) 7\. B 8\. Ba 9\. Br 10\. Co 11\. C 12\. \(K\) 13\. Po 14\. Ne

Short answer

a. 2 H b. 10 Co c. 12 K d. 9 Br e. 8 Ba f. 6 S g. 5 Ag h. 3 Na i. 1 He j. 11 C

Step-by-step solution

Identify the chemical symbols of elements in Column 1

Here are the chemical symbols of the elements given in Column 1: a. hydrogen (H) b. cobalt (Co) c. potassium (K) d. bromine (Br) e. barium (Ba) f. sulfur (S) g. silver (Ag) h. sodium (Na) i. helium (He) j. carbon (C)

Match chemical symbols with their respective symbols in Column 2

Now, we match the chemical symbols of the elements from Column 1 with their corresponding symbols in Column 2: a. hydrogen (H) -> 2\. H b. cobalt (Co) -> 10\. Co c. potassium (K) -> 12\. K d. bromine (Br) -> 9\. Br e. barium (Ba) -> 8\. Ba f. sulfur (S) -> 6\. S g. silver (Ag) -> 5\. Ag h. sodium (Na) -> 3\. Na i. helium (He) -> 1\. He j. carbon (C) -> 11\. C So, the correct matching of the elements and their chemical symbols is: a. hydrogen -> 2\. H b. cobalt -> 10\. Co c. potassium -> 12\. K d. bromine -> 9\. Br e. barium -> 8\. Ba f. sulfur -> 6\. S g. silver -> 5\. Ag h. sodium -> 3\. Na i. helium -> 1\. He j. carbon -> 11\. C

Key concepts

Element Names

Understanding the names of elements is a foundational part of chemistry. Elements are substances made up entirely of one type of atom. Each element has a unique name and a corresponding chemical symbol. These names and symbols are universally accepted and used in the scientific community to facilitate clear communication. Each element's name can often give us clues about its characteristics or history:

• Hydrogen (H): The lightest and most abundant element in the universe. Its name comes from Greek words "hydro" and "genes" meaning "water-forming."
• Cobalt (Co): Named after "kobold," a German word for a mythical goblin, due to its troublesome extraction from ores.
• Potassium (K): The symbol "K" comes from "kalium," its name in Latin.
• Helium (He): A light, noble gas named after the Greek word "helios," meaning sun.

When learning these names, try associating them with their historical or linguistic origins to aid memorization.

Periodic Table

The periodic table of elements is an organized chart that displays all known chemical elements. It arranges the elements by increasing atomic number, which is the number of protons in an atom's nucleus. The table's design reveals the periodic trends and similarities between different elements, making it easier to study their properties. A few key features of the periodic table include:

• Groups: These are the columns of the table. Elements in the same group often share similar chemical properties. For example, group 1 contains the highly reactive alkali metals.
• Periods: These are the rows in the periodic table. Elements in a period show gradual changes in properties as you move from left to right.
• Blocks: The table is divided into s, p, d, and f blocks, representing the subshell being filled with electrons.

Using the periodic table can help you quickly find an element's symbol, predict its behavior, and understand its place among other elements.

Matching Exercises

Matching exercises are a popular educational tool for learning the names and symbols of elements. They help students strengthen their memory and understanding through a hands-on approach. Such exercises often list elements in one column and their symbols in another, requiring matching the two. To effectively complete these exercises:

• Start by identifying the symbols you are confident about, matching them with the correct elements.
• Use process of elimination for symbols you aren't sure about by checking the unpaired options.
• Refer to the periodic table as a guide, using it to double-check your matches.

These exercises not only test your current knowledge but also improve retention through active recall and reinforcement of learning.