凹凸雅思
首页闪卡复习GCSECHEMISTRY1 atomic structure and the periodic table

1 3 properties of transition metals

使用闪卡高效复习CHEMISTRY科目知识点

共计闪卡

12

闪卡自测

进度: 1 / 12已掌握: 0 | 需要复习: 0
问题

Where are transition elements located in the Periodic Table?

点击查看答案
请先阅读问题,然后点击卡片查看答案

所有闪卡

闪卡 1

问题

Where are transition elements located in the Periodic Table?

查看答案

答案

Transition elements are located in the middle of the Periodic Table, between Group 2 and Group 3.

闪卡 2

问题

Give two typical properties of transition elements.

查看答案

答案

Typical properties of transition elements include:

闪卡 3

问题

True or False? Transition elements have low densities.

查看答案

答案

False. Transition elements have high densities.

闪卡 4

问题

True or False? Transition metals do not have the properties typical of a metal.

查看答案

答案

False. Transition metals do have the properties typical of a metal.

闪卡 5

问题

True or False? Transition elements are useful as catalysts.

查看答案

答案

True. Transition elements are useful as catalysts.

闪卡 6

问题

True or False? Group 1 metals and transition metals form ions with the same charge.

查看答案

答案

False. Group 1 metals form ions with a +1 charge while transition metals can form ions with variable charges.

闪卡 7

问题

Compare the hardness of transition metals to Group 1 metals.

查看答案

答案

Transition metals are much harder than Group 1 metals, which are very soft and light.

闪卡 8

问题

How do the melting points of transition metals compare to those of Group 1 metals?

查看答案

答案

Transition metals have much higher melting points than Group 1 metals.

闪卡 9

问题

True or False? Transition metals are more reactive than Group 1 metals.

查看答案

答案

False. Transition metals are much less reactive than Group 1 metals.

闪卡 10

问题

How do Group 1 metals and transition metals differ in their reaction with oxygen?

查看答案

答案

Group 1 metals tarnish quickly in the presence of oxygen, forming a metal oxide. Transition metals react much more slowly. For example, iron takes several weeks to form rust (iron oxide) and requires the presence of water.

闪卡 11

问题

What are two key characteristics that define a transition element?

查看答案

答案

Two key characteristics that define a transition element are:

闪卡 12

问题

Compare the reactivity of Group 1 metals and transition metals with water, oxygen, and halogens.

查看答案

答案

Group 1 metals react readily with water, oxygen, and halogens, while transition metals either react very slowly or do not react at all with these substances.