Quiz 2 Material (Atoms)

Question 1

Four qualities of matter

Answer 1

Hot, dry, cold and moist

Question 2

Matter is composed of…..

Answer 2

a finite number of incredibly small but discrete units we call atoms

Question 3

Each element consists of ________ particles called atoms.

Answer 3

indivisible,minute

Question 4

All atoms of a given element are…..

Answer 4

identical

Question 5

Atoms of different elements have

Answer 5

different masses

Question 6

Atoms of two or more different elements combine to

Answer 6

form compounds

Question 7

Atoms are rearranged to

Answer 7

form new combinations in a chemical reaction

Question 8

Elements are only made with

Answer 8

One type of atom

Question 9

Protons and neutrons have what mass?

Answer 9

Nearly the same mass

Question 10

Electrons have what type of mass?

Answer 10

Negligible mass

Question 11

What kinda of charges do protons, neutrons and electrons carry?

Answer 11

Protons: positive + 1
Neutrons: no charge
Electrons: negative -1

Question 12

Which nucleon is heaviest?

Answer 12

Neutrons

Question 13

Which nucleon is lightest?

Answer 13

Electrons

Question 14

Where is most of an atoms mass located?

Answer 14

Inside the nucleus

Question 15

What comprises most of an atoms volume?

Answer 15

The electron cloud

Question 16

Like charges ___ and unlike charges ___

Answer 16

Repel, attract

Question 17

Neutrons are….

Answer 17

Neutral

Question 18

Mass number

Answer 18

Number of protons and neutrons inside the nucleus

Question 19

Atomic number

Answer 19

Number of protons in the nucleus

Question 20

Neutral atoms have

Answer 20

No overall charge

Question 21

Every atom of a given element has

Answer 21

the same atomic number (same number of protons)

Question 22

How many protons, neutrons and electrons are in iron-5?

Answer 22

26 p, 30 n, 26 e

Question 23

Isotopes

Answer 23

atoms of the same element that have a different number of neutrons

Question 24

Identify the number of protons, neutrons, and electrons in Boron-11.

Answer 24

P: 5
N: 6
E: 5

Question 25

The calculation of an element’s atomic weight includes the ____ of each isotope.

Answer 25

percent abundance

Question 26

How do you calculate atomic mass?

Answer 26

-List the isotope -List the mass in atomic units -List isotopic abundance -Multiply isotopic abundance by the mass and add the products

Question 27

Rows and columns on the periodic table are called…..

Answer 27

Periods and groups

Question 28

Properties of metals

Answer 28

conduct heat & electricity shiny in appearance are malleable & ductile most are solids at room temp

Question 29

Properties of non-metals

Answer 29

poor conductors of heat & electricity not shiny, malleable or ductile (are brittle) can be s, l, or g at room temp.

Question 30

Properties of metalloids

Answer 30

conduct electricity but not as well as metals

Question 31

Representative elements

Answer 31

Elements in A-groups

Question 32

Transition elements

Answer 32

Elements in B-groups

Question 33

Inner transition elements

Answer 33

Elements in series

Question 34

Halogens

Answer 34

-exist as two atoms joined together -very reactive -combine with many other elements to form compounds

Question 35

alkali metals and alkaline earth metals

Answer 35

-low melting points -good conductors of heat and electricity -react with water to form basic solutions

Question 36

Noble gases

Answer 36

-Very stable -Rarely combine with other elements -Exist as monatomic gases

Question 37

The net charge on an atom of a given element changes as ___ are added or removed

Answer 37

Electrons

Question 38

Neutral atoms of all isotopes of a given element have the same

Answer 38

Number of electrons

Question 39

How many neutrons are in an atom of uranium-235?

Answer 39

143

Question 40

Where is the mass number located?

Answer 40

Bottom center or top left

Question 41

Where is the atomic number located?

Answer 41

Top center or bottom left

Question 42

Cations vs anions

Answer 42

Cations have a positive charge Anions form a negative charge

Question 43

Conversion for Celsius to Kelvin

Answer 43

tC + 273.15

Question 44

How many cm in one inch?

Answer 44

2.54

Question 45

How many grams in one pound?

Answer 45

453.592

Question 46

Conversion for Celsius to Fahrenheit?

Answer 46

(tC x 1.8) + 32

Question 47

How many pounds in a kilogram?

Answer 47

2.21