Silicon (Si) is the second most common element in the Earth's crust (oxygen is the most common). The compound silica, also known as silicon dioxide (SiO 2), is formed from silicon and oxygen atoms. Since oxygen and silicon make up about 75% of the Earth, the compound silica is quite common.ilicon (Si) is the second most common element in the Earth's crust (oxygen is the most common). The compound silica, also known as silicon dioxide (SiO 2), is formed from silicon and oxygen atoms. Since oxygen and silicon make up about 75% of the Earth, the compound silica is quite common.
Losing one's Mother is a painful experience. Send comfort to your friend or family member with this lovely sympathy card for the loss of a mother / mom. This image is one of hope, showing the silhouette of a woman with outstretched arms, greeting the sunrise. The hint of a rainbow encircles the figure and the shape of a cross stands alongside her.
Think about fond memories and personal stories you can include in your sympathy message - these can be really special for the bereaved. When someone you know goes through a bereavement it can be really hard to know what to say. Here we look at the dos and donâts when it comes to offering your condolences. Traditionally people will send a sympathy message via a letter, card or flowers, although these days more of us are using social media and emails to express our sympathy.