Science

Question 1

What country was Antoine Lavoisier from?

Answer 1

France

Question 2

What were two of Antoine Lavoisier’s occupations?

Answer 2

• Tax collector
• Producer of gunpowder

Question 3

During which times of the day did Antoine Lavoisier do his science work?

Answer 3

• 6-9 AM
• 7-10 PM
• Plus one day

Question 4

List three of Antoine Lavoisier’s philanthropic projects.

Answer 4

• Model farm
• Saving banks
• Insurance society

Question 5

What was ‘weird’ about Antoine Lavoisier’s list of elements?

Answer 5

There were no elements for heat and light

Question 6

What country was John Dalton from?

Answer 6

England

Question 7

What was one of John Dalton’s main interests?

Answer 7

The weather

Question 8

At what age did John Dalton start his occupation as a college professor?

Answer 8

Age 12

Question 9

How many observations did John Dalton make about the weather?

Answer 9

200,000 observations

Question 10

What was John Dalton’s disease?

Answer 10

Color-blind

Question 11

What was John Dalton’s main contribution to the Periodic Table?

Answer 11

The 1st list of elements in order of their mass

Question 12

What country was Dmitri Mendeleev from?

Answer 12

Russia

Question 13

List three interesting facts about Dmitri Mendeleev’s family.

Answer 13

• Dad died
• House burned to the ground
• Youngest of fourteen

Question 14

List three interesting facts about Dmitri Mendeleev’s college experience.

Answer 14

• Rejected from 1st college
• Graduated top of his class even when bedridden
• Mom was determined for him to go to college

Question 15

Why did Dmitri Mendeleev have to quit his job?

Answer 15

He was a political activist

Question 16

What are the three elements that Dmitri Mendeleev predicted?

Answer 16

• Scandium
• Gallium
• Germanium

Question 17

In what way did Dmitri Mendeleev disobey the tsar?

Answer 17

He cut his hair and beard only once a year

Question 18

What did John Dobereiner contribute in 1829?

Answer 18

Triads

Question 19

What significant event occurred in 1860 related to atomic mass?

Answer 19

International Chemistry Conference - Stanisalao Cannizzaro - atomic mass - based on properties of gases

Question 20

What did John Newlands propose in 1866?

Answer 20

Octaves

Question 21

What did Julius Lothar Meyer do in 1870?

Answer 21

PT with blank spaces

Question 22

What is the octet rule?

Answer 22

There cannot be more than 8 valence electrons

Question 23

What is the definition of an element?

Answer 23

An element is a substance that cannot be broken down into a simpler substance through normal chemical means

Question 24

What is the Periodic Law?

Answer 24

A chemical or physical property of elements that varies in a periodic way

Question 25

What is the most abundant element in the universe?

Answer 25

* Hydrogen * Helium

Question 26

What are the two most abundant elements in the atmosphere, with percentages?

Answer 26

* Nitrogen 78% * Oxygen 21%

Question 27

What are the two most abundant elements in the Earth's crust?

Answer 27

* Oxygen * Silicon

Question 28

What are the four most abundant elements in the human body?

Answer 28

* Hydrogen * Oxygen * Nitrogen * Carbon

Question 29

What is the highest naturally occurring element?

Answer 29

Uranium

Question 30

What are the two lowest man-made elements?

Answer 30

* Technetium * Promethium

Question 31

What are the three least abundant elements in the Earth's crust?

Answer 31

* Francium * Radium * Astatine

Question 32

What are the two elements with the highest melting temperature?

Answer 32

* Tungsten * Carbon (in diamonds)

Question 33

What is the least metallic metal?

Answer 33

Manganese

Question 34

What is the metal that is not a metal?

Answer 34

Hydrogen

Question 35

What are the two most reactive elements?

Answer 35

* Francium * Fluorine

Question 36

What three elements were left blank by Dmitri Mendeleev?

Answer 36

* Scandium * Gallium * Germanium

Question 37

What is the highest element that is used commercially?

Answer 37

Americium

Question 38

What is Americium used for?

Answer 38

Used for smoke detectors

Question 39

What are the six properties of metals?

Answer 39

* Ductile * Malleable * Shiny * High melting temperature * Conducts heat * Conducts electricity

Question 40

What are two ways to show that a scientific model is a good model?

Answer 40

* Accurate information to predict the future * Helps explain the past

Question 41

What is electronegativity?

Answer 41

the strength with which an atom holds onto an electron of the compound bond

Question 42

What is an ion?

Answer 42

a charaged particle

Question 43

List the properties of an Ionic Bond.

Answer 43

* Electrons are transferred * Between a metal and a non-metal * Forms a crystal lattice * Dissolves in water * Conducts electricity in water * High melting temperature * Brittle

Question 44

List the properties of a Covalent Bond.

Answer 44

* Electrons are shared * Between a non-metal and a non-metal * Forms a molecule * Does not dissolve in water * Does not conduct electricity * Low melting temperature * Flexible

Question 45

List the properties of a Metallic Bond.

Answer 45

* Electrons are shared on a grand scale * Between a metal and a metal * Forms an alloy * High melting temperature * Malleable and ductile * Does not dissolve in water * Conducts heat * Conducts electricity