HS PS

What is the name of the group 0 elements?

• Alkali metals

• Halogens

• Noble gases

• Transition metals

Why are group 0 elements unreactive?

• Their atoms have stable electronic structures

• They are gases at room temperature

• They have low boiling points

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What are the products of the reaction of sodium and water?

• Sodium hydride and oxygen

• Sodium hydroxide and hydrogen

• Sodium oxide and hydrogen

Which of these equations for the reaction of iron and chlorine to make iron(III) chloride is correct?

Hint: Count the atoms...

• 2Fe + 3Cl₂ → 2FeCl₃

• Fe + 3Cl₂ → 2FeCl₃

• 3Fe + Cl₂ → 3FeCl₄

Tags

NGSS.MS-PS1-5

How many electrons are in the outer shell of an atom of an alkali metal?

Hint: What group number are the alkali metals?

• 1

• 7

• 8

Tags

NGSS.HS-PS1-1

Which of these physical properties do group 1 elements have?

• They have high densities

• They are hard

• They have low melting points compared to other elements

The boiling points of the halogens increase down the group. Which statement helps to explain why?

• Going down the group, the energy needed to overcome the intermolecular forces gets less

• Going down the group, the molecules get larger

• Going down the group, the intermolecular forces get weaker

At room temperature, what is the appearance of the product of the reaction of potassium with chlorine?

• Shiny silver-coloured solid

• Green gas

• White solid

Tags

NGSS.MS-PS1-2

Which two solutions react together in a displacement reaction?

• Bromine and potassium chloride

• Bromine and potassium iodide

• Chlorine and potassium fluoride

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which statement describes the trends in reactivity in groups 1 and 7?

Read these carefully...

• The reactivity of the group 1 elements decreases down the group and the reactivity of the group 7 elements increases down the group

• The reactivity of the group 1 and group 7 elements increases down the group

• The reactivity of the group 1 elements increases down the group and the reactivity of the group 7 elements decreases down the group