Металдардың белсенділік қатары

Калий элементінің ағылшынша тауы

• Lithium

• Sodium

• Potassium

• Calcium

Натрий элементінің ағылшынша атауы

• Lithium

• Sodium

• Potassium

• Calcium

Ca

• Калий

• Кальций

• Кадмий

How much is calcium valence?

• І

• ІІ

• ІІІ

• IV

Complete this reaction

Ca+O2=.........

• CaO

• CaO₂

• Ca₂O

• Ca₂O₂

Complete this reaction

Na+H₂O=

• NaOH+OH

• Na₂O+HO

• NaO+H₂

• NaOH+H₂

What happens if the alkali metals react with water?

• Nothing

• Hydroxides and hydrogen are formed

• Oxides are formed

• Hydroxides are formed

What is formed if alkali metals react with oxygen?

• Salts

• Hydrogen

• Acids

• Oxides

What forms when aluminum reacts with an acid?

• Salt and hydrogen

• Only salt

• Only Hydrogen

• Nothing

Alkaline earth metal?

• Al

• Na

• Ca

• Fe