Science

1. react with water to give metal hydroxide and hydrogen
burn with lilac flame
react with dilute acid (Hcl and H2SO4) to give hydrogen and metal chloride/ sulphate

2. react with water to give metal hydroxide and hydrogen but less vigorously than potassium
burn with golden yellow flame
react with dilute acid (Hcl and H2SO4) to give hydrogen and metal chloride/ sulphate

3. react with water to give metal hydroxide and hydrogen but less vigorously than sodium
burn with brick-red flame
react with dilute acid (Hcl) to give hydrogen and metal chloride/ sulphate(no H2SO4 since CaSO4 insoluble)

4. react with steam to give metal oxide and hydrogen(no cold water again)
burn with bright white flame
react with dilute acid (Hcl and H2SO4) to give hydrogen and metal chloride/ sulphate

5. doesn't react with steam or cold water(Al2O3 fromed on its surface is impermeable to air and water)
沒有flame描述了也不用記
react with dilute acid (Hcl and H2SO4) to give hydrogen and metal chloride/ sulphate

6. react with steam to give metal oxide and hydrogen(no cold water again)
沒有flame描述了也不用記
react with dilute acid (Hcl and H2SO4) to give hydrogen and metal chloride/ sulphate

7.same as 6

8. doesn't react with steam or cold water (too unreactive)
沒有flame描述了也不用記
react with dilute acid (Hcl and H2SO4) to give hydrogen and metal chloride/ sulphate

9. doesn't react with steam or cold water too unreactive)
copper(II) compound burn with bluish-green flame (記住copper element 不是)
doesn't react with dilute acid (too unreactive)

10. doesn't react with steam or cold water too unreactive)
沒有flame描述了也不用記
doesn't react with dilute acid (too unreactive)

11.沒有任何反應