Question

makeup: flame test lab
in this lab, you used substances that contained the following elements:
cu, copper
k, potassium
na, sodium
sr, strontium
are these metals or non metals? use the periodic table to determine your 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.