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Which row of the table describes Group 1 and Group 7 elements? Group 1 elements Group 7 elements A metals with low melting points metals with high melting points B metals with low melting points non-metals with low melting points C non-metals with high melting points non-metals with low melting points D non-metals with low melting points metals with high melting points - OCR Gateway - GCSE Chemistry: Combined Science - Question 5 - 2019 - Paper 4
Question 5
Which row of the table describes Group 1 and Group 7 elements? Group 1 elements Group 7 elements A metals with low melting points metals with high melting points B... show full transcript
Worked Solution & Example Answer:Which row of the table describes Group 1 and Group 7 elements? Group 1 elements Group 7 elements A metals with low melting points metals with high melting points B metals with low melting points non-metals with low melting points C non-metals with high melting points non-metals with low melting points D non-metals with low melting points metals with high melting points - OCR Gateway - GCSE Chemistry: Combined Science - Question 5 - 2019 - Paper 4
Step 1
Identify the characteristics of Group 1 elements
Answer
Group 1 elements are known as alkali metals. They are characterized by having low melting points compared to most metals. Common examples include lithium (Li), sodium (Na), and potassium (K), which all exhibit lower melting points than other metallic elements.
Step 2
Identify the characteristics of Group 7 elements
Answer
Group 7 elements are known as halogens. They generally consist of non-metals with relatively low melting points, especially when compared to other groups. Elements like fluorine (F) and chlorine (Cl) have significantly low melting points.
Step 3
Analyze the options in the table
Answer
Given the characteristics outlined, the correct description among the options provided is:
B: metals with low melting points (Group 1) and non-metals with low melting points (Group 7).
This option best represents the properties of both Group 1 and Group 7 elements.