makeup: flame test lab\nin this lab, you used substances that contained the following elements:\ncu…

makeup: flame test lab\nin this lab, you used substances that contained the following elements:\ncu, copper\nk, potassium\nna, sodium\nsr, strontium\nare these metals or non metals? use the periodic table to determine your answer.
Answer
Explanation:
Step1: Check element positions in periodic table
Copper (Cu), Potassium (K), Sodium (Na), and Strontium (Sr) are all located on the left - hand side and middle of the periodic table.
Step2: Recall metal - non - metal classification
Elements on the left - hand side and middle of the periodic table are metals.
Answer:
These elements (Cu, K, Na, Sr) are metals.