metals and oxygen

In this chemical reaction, which is the product/s?

Magnesium + Oxygen --> Magnesium oxide

• magnesium

• magnesium and oxygen

• magnesium oxide

• oxygen

Tags

NGSS.HS-PS1-2

How are metal oxides formed?

• When metals react with oxide.
• When metals react with water.
• When metals react with air.
• When metals react with oxygen.

The positive test result for oxygen gas, O₂ is

• a lit splint; gas burns with a squeaky pop

• a glowing splint; the splint relights

• it turns lime water milky / cloudy

• it puts out a burning splint

Complete the equation below. 
Iron + Oxygen --> 

• Iron oxygen
• Iron oxide
• Iron oside
• Ion oxide

Tags

NGSS.HS-PS1-2

Which of the following is the product of the reaction of aluminium and oxygen?

• aluminium oxide.
• metal oxide
• aluminium ore
• aluminium and oxygen

Which of the following defines oxidation?

• A chemical reaction where a substance gains oxygen.
• A chemical reaction where a substance loses oxygen.
• A chemical reaction where a substance loses a metal.
• A chemical reaction where a substance gains a metal.

Which of the following lists of metals will ALL react with oxygen when heated in a Bunsen flame?

• gold, silver and magnesium

• magnesium, sodium and iron

• iron, magnesium and gold

• sodium, magnesium and silver

Which one of the following symbol equations correctly shows a metal reacting with oxygen and would actually work?

• 2Fe₂O₃ --> 4Fe + 3O₂

• Au + O₂ -->AuO

• Cu + O₂ --> CuO

• C + O₂ --> CO₂

what do the symbols (s), (l) and (g) mean in a chemical equation?

• sodium, lithium and gold

• sulphur, lead and germanium

• silver, liquid and gas

• solid, liquid and gas

In a chemical equation what does the symbol (aq) mean?

• aqueous - the substance will explode if put in water

• aqueous solution - the substance is dissolved in water

• aqueous solution - the substance is dissolved in acid

• aqueous - the substance has reacted with water