List 3 main states of matter on earth and describe the physical properties associated with each state.

Calcium sulfide forms when calcium loses 2 valence electrons to sulfur. What type of a bond is formed? Select one of the options below as your answer: A) covalent B) ionic

2. A solid block with a length of 6.0 cm, a width of 3.0 cm, and a height of 3.0 cm has a mass of 146 g. What is the block's density? Show all work. 3. To determine the density of an irregularly shaped object, a student immersed the object in 21.

What happens when light strikes a dark heavy object

What specific name is given to a chemical bond in which atoms share electrons?

The name of the commonly used hardness scale is: specific gravity organic Mohs inorganic

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.