Explain how you can use physical properties to compare substance

How do you know that a combustion reaction is exothermic

On a test, Helena is defining energy. Which must she include in order to get her answer marked correct? making objects more compact the ability to do work carrying through matter and space the bonds of atoms

How many bonds does amonia NH3 have?

What is the correct formula for calcium phosphate?

A scientist examining the periodic table sees that the element magnesium (Mg) has the atomic number of 12. Based on this knowledge, what does the scientist immediately know is true about magnesium atoms? Magnesium atoms have 12 protons.

How many atoms are in 766.3 grams of Li?

The process by which DNA makes a complete copy of itself is called? A) Duplication B) Development C) Transcription D) Replication

The electron configuration 1s22s22p63s23p6 represents which noble gas?

What are some disadvantages of incinerators?

What mass of potassium chlorate would contain 40grams of oxygen?