Chapter 5-6

Question 1

What is an atom?

Answer 1

An atom is the smallest part of an element that retains the identity of the element

Question 2

What is a neutrino, and why is it called a shy particle?

Answer 2

A neutrino is subatomic particle that interacts very weakly with matter, which is why it’s called the “shy particle” since it’s so difficult to detect

Question 3

What is everything made of according to Dalton?

Answer 3

Everything is made of atoms, according to Dalton.

Question 4

Can atoms be created or destroyed according to Dalton?

Answer 4

Atoms cannot be created or destroyed

Question 5

What happens when atoms of different elements combine

Answer 5

When atoms of different elements combine, they form compounds

Question 6

What shape did Dalton think atoms were?

Answer 6

Dalton thought atoms were small, hard spheres

Question 7

Was Daltons model the final word on atoms?

Answer 7

No

Question 8

What did scientists use gas discharge tubes for in the 1800s?

Answer 8

Gas discharge tubes were used to study electric currents in gases at low pressure

Question 9

What did scientists observe when applying electric currents to gases at low pressure

Answer 9

Thomson demonstrated that the rays were made of negatively charged particles inside atoms

Question 10

What is Thomsons model known as

Answer 10

Thomsons model is known as the raisin bun model

Question 11

A positively or negatively charged atom

Answer 11

An ion

Question 12

A chemical link between two atoms, which holds the atoms together

Answer 12

Chemical bond

Question 13

A chemical bond in which one or more pairs of electrons are shared by two atoms

Answer 13

Convelant bond

Question 14

The smallest discrete particle of a pure substance, which has one or more shared pairs of electrons

Answer 14

Molecules

Question 15

A chemical bond that forms between oppositely charged ions

Answer 15

Ionic bond

Question 16

A compound formed that formed when atoms of two or more different elements share electrons

Answer 16

Molecular compound

Question 17

A compound made of oppositely charged ions

Answer 17

Ionic compound

Question 18

How to indicate if an ion lost or gained an electron?

Answer 18

If there is a + an ion has lost electrons. If there is a negative it has gained an electron

Question 19

Examples of an ionic compound

Answer 19

Sodium chloride and magnesium oxide

Question 20

Examples of molecular compounds

Answer 20

Water(h2o) or carbon dioxide (cO2)

Question 21

What part of the atom did Rutherford find?

Answer 21

The nucleus

Question 22

What part of the atom did Bohr find?

Answer 22

The electrons orbit the nucleus in specific energy levels or shells

Question 23

What did Dalton discover

Answer 23

He proposed the atomic theory

Question 24

What did Thomson discover

Answer 24

The electron

Question 25

What elements do ionic compounds usually form

Answer 25

Metals and non metals

Question 26

An electronic the outermost occupied energy level of an atom is a?

Answer 26

Valence electon

Question 27

A ? Is a column in the periodic table

Answer 27

Group/family

Question 28

An element that is not shiny, malleable, or ductile and is a poor conductor of heat

Answer 28

Non metal

Question 29

A system for organizing the elements by atomic number is the

Answer 29

Periodic table

Question 30

The number of protons in an atom is the

Answer 30

Atomic number

Question 31

The centre of an atom, which is composed of protons and neutrons, is the

Answer 31

Nucleus

Question 32

The negatively charged particles in an atom are the

Answer 32

Electons

Question 33

The ? of an atom is the sum of the number of protons and the number of neutrons

Answer 33

Mass number