1 Which scientist first said that "elements are made up of identical atoms

which cannot be created or destroyed"?

Bohr

Democritis

Thomson

O

Dalton

Other:

The density of water is 1.0 g/cm3 will rubbing alcohol float with a density of 0.81 g/cm3

Why does a drop of water form a sphere

An engineer uses aluminum to build an airplane rather than composite materials that are lighter and stronger. He does this because he is concemed about the composite materials and how suddenly they can fail. This is an example of A.

What is the role of collagen in the body? A) it slows down reactions B) it speeds up reactions C) it transports oxygen D) it provides structural support

How many grams are in 7.8 moles of NaCl?

When did Pangaea begin to break apart? a. 20 million years ago c. 250 million years ago b. 100 million years ago d. 2 billion years ago.

When an object is thrown, the thrower pushes the object. This causes the object to move in a motion.

Distinguish between accuracy and precision in measurements

What is the concentration of h + ions in a 2.20 m solution of hno3?

Which type of cell is a rose thorn? prokaryotic eukaryotic plant eukaryotic animal chloroplastic