Chemistry - Elements Compounds (DepEd)

What elements used as the components of steel used in making bars?

• iron and hydrogen

• aluminum and silver

• carbon and iron

• copper and gold

What element comprises the bones and teeth?

• sodium
• calcium
• potassium
• iron

What element widely used in advertising signs?

• neon
• incandescent
• fluorescent
• LED

Answer explanation

Bright and Eye-Catching: Neon signs are incredibly bright and vibrant, making them highly visible even in daylight

What element used to make jewelries?

• silver
• diamond
• platinum
• gold

What element found in thermometers?

• water
• aluminum
• oxygen
• mercury

What are found in all living organisms?

• Carbon, Oxygen

• Gold, Mercury

• Chlorine, Sulfur

• Boron, Flourine

What combines with chlorine to make table salt?

• oxygen
• carbon
• sodium
• hydrogen

What are used as bleaching and purifying agents?

• Chlorine, sodium hypochlorite

• Salt, sugar, baking powder
• Ammonia, bleach, iodine
• Baking soda, vinegar, lemon juice

Commonly used in kitchen utensils

• Aluminum, glass, or ceramic
• Rubber, silicone, or copper
• Brass, iron, or melamine
• Stainless steel, plastic, or wood, Gold

the gas of life responsible for life to exist

• nitrogen
• carbon dioxide
• hydrogen
• oxygen