Which of these is an example of physical change?

1) water evaporates

2) gasoline ignites

3) a nail rusts

4) wood rots

How are particles in a solid arranged and how do they move

A man has 50.0 ml bottle completely filled with 163 g of a slimy green liquid. What is the density of the liquid?

How many moles of Fe are in 235.45g of Fe

Use the map to explain where the South American and African plates were located hundreds of thousands of years ago. Africa was more north and east and South America was more north and west of their current positions.

How many molecules of carbon dioxide are in 243.6 g of carbon dioxide

What is the term used for carrying rock away? Question 4 options: mechanical chemical deposition erosion

How do I balance this H2 + O2 = H2O

Which notation represents atoms that have the same number of protons but a different neutron? 1) H-3 and He - 3 2) S-32 and S - 32 3) CI-35 and CI - 37 4) Ga-70 and Ge - 73

A mole is the amount of a substance that contains as many particles as the number of atoms in 12 grams of what isotope? A) Boron-12 B) Carbon-12 C) Calcium-39 D) Aluminum-26

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