Which equation obeys the law of conservation of mass? A. 2Fe+3O2 - -> 2Fe2O3

B. 4Fe+O2--> 2Fe2O3

C. Fe+O2--> Fe2O2

D. 4Fe+3O2--> 2Fe2O3

The two forms of oxygen, O2 (g) and O3 (g), have (1) different molecular structures and identical properties (2) different molecular structures and different properties (3) identical molecular structures and identical properties (4) identical

Suppose you fill a grass with ice cubes. When the ice cubes melt, is the glass still full?

Defined the term acid-base indicators

Explain how there can be so many different kinds of suntances in the world

Which substance cannot be decomposed by a chemical change? 1. HI 2. AlCl3 3. H2O 4. Cu

If 100 grams citric acid react with 100 g baking soda how many grams of carbon dioxide?

What state of matter undergoes changes in volume most easily? a. solidb. liquidc. gasd. frozen

What was the result of the atomic theory?

Explain mitosis and meiosis in your own words.

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch