Duplicate of Density

Question 1

What did Antoine Lavoisier do?

Accepted Answer

Built on Joseph Priestley's work and discovered Oxygen.

Question 2

Rutherford and his Gold Foil Experiment showed that

Accepted Answer

The atom is mostly empty space

Question 3

Which atomic particle did Bohr locate in his model?

Accepted Answer

electrons in orbits like planets

Question 4

Which is the least dense liquid listed?

Accepted Answer

ethyl alcohol (m = 39.5 g; v = 50 mL)

Question 5

What gas was made by heating a mercury calx and would make candles burn very brightly?

Accepted Answer

Oxygen

Question 6

What is the density of a liquid if 54 mL weighs 63 g?

Accepted Answer

1.16 g/mL

Question 7

An unusually shaped object is placed in water and it sinks. Its density must be

Accepted Answer

> 1.0 g/mL

Question 8

A cylinder with a mass of 237 g, height of 8 cm and radius of 3 cm. Density =

Accepted Answer

1.05 g/cm3

Question 9

The term that describes the 3-Dimensional space something takes up is

Accepted Answer

volume

Question 10

The density of water is

Accepted Answer

1.0 g/mL

Question 11

From his experiments with gases, what did Joseph Priestly find by heating mercury calx?

Accepted Answer

A gas is made that allows candles to burn longer.

Question 12

Which atomic particle was the last to be conceived/discovered?

Accepted Answer

neutrons

Question 13

The density of a cube that is 75 g and 4 cm on each side is

Accepted Answer

1.17 g/cm3

Question 14

JJ Thompson’s Plum Pudding (or chocolate cupcake model) was the first to name ___________.

Accepted Answer

electrons

Question 15

What gas was also called fixed air and would put out candle flames?

Accepted Answer

Carbon dioxide

Question 16

What are you going to be for Halloween?

Accepted Answer

My favorite book/movie character- extra credit for english., A superhero- the world needs as many as it can get., Just myself- I am already plenty scary. :), I am handing out candy- one for you, two for me. :)

Question 17

Phlogiston was

Accepted Answer

a made-up substance that was used to explain metal rusting.

Question 18

The term that describes the amount of mass per unit of volume is

Accepted Answer

density

Question 19

The amount of matter in something is its

Accepted Answer

mass

Question 20

An unusually shaped object is placed in water and it floats. Its density must be

Accepted Answer

< 1.0 g/mL

Question 21

The # of protons in gallium - the # of protons in sodium x the # of protons in nitrogen = ?

Accepted Answer

140, -46

Question 22

The removal of what from rocks led to the discovery of new elements?

Accepted Answer

Oxygen

Question 23

The four elements that Ancient Greeks thought were central to all things were

Accepted Answer

Water, Air, Fire and Earth

Question 24

What did the discovery of Oxygen prove?

Accepted Answer

That there must be another way to explain chemical reactions

Question 25

Corn syrup has a density of 1.37 g/mL. How much would 85 mL of corn syrup weigh?

Accepted Answer

116.45 g

Question 26

Schrodinger and Pauli fine-tuned Bohr's model by-

Accepted Answer

showing electrons in clouds where they were likely to be.

Question 27

A ball with a mass of 17 g displaces 7.5 mL of water. Its density is:

Accepted Answer

2.27 g/mL

Duplicate of Density

Questions 27

Duplicate of Density

Questions 27