metals and non metals

Multiple Select

What is the relation between bronze and copper?

• Bronze is a type of nonmetal

• Copper is a type of alloy

• Bronze is an alloy made from copper and tin

• Copper is a type of metal

Multiple Choice

Copper, carbon, and fluorine are elements found on the periodic table. Which of the following statements about these elements at room temperature is accurate? (Use the periodic table

• Carbon is non-metal and conducts electricity.

• Copper is non-metal and conducts electricity.

• Fluorine is non-metal and conducts electricity.

• All three elements are metals.

Multiple Choice

What happens when hammering a piece of sulphur?

• It crumbles easily because it is metal.

• It crumbles easily because it is a brittle nonmetal.

• It remains unchanged because it is a metal.

• It becomes liquid because of heat.

Fill in the Blanks

As the number of valence electrons in the metal atom increases, what happens to the strength of its metallic bond?

Multiple Choice

An ionic bond forms when 

• Valence electrons are shared
• a sea of mobile electrons surround the cations
• valence electrons are transferred between atoms
• none of the above

Multiple Choice

What is the relationship between the number of valence electrons and the melting point of metals as illustrated in the table?

• More valence electrons lead to lower melting points

• More valence electrons lead to higher melting points

• Valence electrons do not affect melting points

• Melting points are the same regardless of valence electrons

Multiple Choice

What are the properties of bronze alloy?

• It rusts easily

• It is softer than copper

• It is harder than copper and resistant to rusting

• It is a pure metal

Multiple Choice

Examine the results (color change) of the pH paper shown in the picture. What type of substance was tested?

• an acid

• a base

• a neutral substance

• none of the above

Multiple Choice

According to the scientist Arrhenius, what do acids give when they dissolve in water?

• Negative hydroxide ions

• Positive hydrogen ions

• Carbonate ions

• Sulfate ions

Multiple Choice

When the polyatomic ion in an acid ends in -ate, the root name of the polyatomic ion is followed by the ending -_____.

• ide

• ic

• ous

• ite

Multiple Choice

Name this acid: H₂SO₄

• hydrogen sulfate

• hydrosulfuric acid

• sulfuric acid

• sulfurous acid

Multiple Choice

When naming oxyacids, change "-ite" to:

• -ate

• -ic

• -ous

• -ite

Multiple Choice

The molecular formula of the alkali ends with the formula of __________.

• Hydroxide anion OH-

• Calcium cation

• Sodium hydroxide

• Hydrogen cation

Multiple Choice

Which type of ion does an acid produce when it is dissolved in water?

• oxide

• oxygen, O₂

• hydronium, H₃O⁺

• hydroxide, OH^-

Open Ended

How can you differentiate between an acid solution and an alkali solution by using litmus strips?

Open Ended

Compare the electrical conductivity of sodium hydroxide and ammonium hydroxide, with an explanation.

Open Ended

Explain the difference between metal oxides and nonmetal oxides based on their reactions with acids and alkalis.

Multiple Select

What are the harmful impacts of acid rains?

• Destruction of forests

• Harming the aquatic organisms

• Corrosion of buildings

• Health problems in the human respiratory system

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident