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A) Water B) Atoms
C) Air D) Vibrations nitrogen, oxygen, argon oxygen, hydrogen, chlorine, sodium Which of the following are the most common elements in our oceans? oxygen, silicon, Aluminum and Iron Oxygen, Carbon, Hydrogen These are considered the building blocks of matter. protons atoms elements compounds How many atoms are in the compound NaCl 4 2 3 0 What are the major components of Earth's atmosphere nitrogen, oxygen silicon and aluminum oxygen, chlorine silicon dioxide and calcium chloride The picture below shows 6 compounds 2 elements 2 compounds 2 atoms not pure substance compound This is information from the periodic table. This is an example of a(n) element kinetic energy a. They break down when reacting with acids b. they can be altered with electric current c. they are always metals d. they are considered a pure substance Which of the following is a characteristic of elements? Which of the following represent an element? a. hydrogen b. water c. carbon dioxide d. salt AlP03 How many elements? 4 3 5 6 Where are metals located on the periodic table? along the stair step line on the upper right of the stair step line left of the stair step line scattered around the periodic table 2 7 4 5 How many atoms make up the compound shown here? Na2CO3 How many elements? 4 3 5 6 Na2CO3 How many atoms? 4 3 5 6 The picture below shows how many different elements? 2 6 3 4 Co4HOHow many elements? 4 3 5 6 |