http://www.ck12.org Chapter 2. Matter
FIGURE 2.107
Vocabulary
- alkaline Earth metal: Metal in group 2 of the periodic table that has two valence electrons and is very reactive
but less so than an alkali metal.
Explore More
At the following URL, observe how four different alkaline Earth metals react with water. After you watch the video,
answer the questions below.
http://www.youtube.com/watch?v=B2ZPrg9IVEo (0:16)
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/54913- Observe the reactions in the video, and then rank the alkaline Earth metals from most to least reactive with
water. - What explains the differences in reactivity?
- Predict the reactivity of beryllium with water. Where would it fit in your ranking?
- What substances are produced in each reaction that you observed in the video?
Review
- What are alkaline Earth metals? What are their physical properties?
- Why are alkaline Earth metals very reactive?
- Compare and contrast the reactivity of beryllium (Be) and barium (Ba).