Ch. 9 Test

Question 1

Which group is very stable and do not ordinarily form compounds?

Accepted Answer

Noble gases

Question 2

If a person is being positive they are resembling which kind of atomic particle?

Accepted Answer

Proton

Question 3

Does the color of light affect the number of leaves on a plant? The independent variable is?

Accepted Answer

The color of light

Question 4

The majority of the periodic table is made up of _____________.

Accepted Answer

metals

Question 5

What is the definition of a law?

Accepted Answer

Laws describe what scientists expect to happen.

Question 6

The center of the atom is called the __________ and it holds the protons and __________.

Accepted Answer

Nucleus; Neutrons

Question 7

What do you call the abbreviation scientists use for elements?

Accepted Answer

Chemical symbol

Question 8

What is it called when an element can be pulled into wires?

Accepted Answer

ductile

Question 9

Atoms with the same number of protons, but different numbers of neutrons are called ________.

Accepted Answer

Isotopes

Question 10

What can you predict from an element's location in the periodic table?

Accepted Answer

its properties

Question 11

What type of elements are found on the right side of the table?

Accepted Answer

nonmetals

Question 12

When a few particles were deflected in Rutherford's gold foil experimented he inferred ________

Accepted Answer

an atom's positive charge must be in a region in the center

Question 13

By what property did Mendeleev arrange his periodic table?

Accepted Answer

atomic mass

Question 14

By what property is the modern periodic table arranged?

Accepted Answer

atomic number

Question 15

What do you call the deterioration of metal due to reaction with the environment?

Accepted Answer

Corrosion

Question 16

What family in the periodic table contains the element of the chemistry of life?

Accepted Answer

the carbon family

Question 17

If a neutral atom has 10 protons then it will also have 10 _____________.

Accepted Answer

electrons

Question 18

Which of these best describes properties of metals?

Accepted Answer

Malleable, ductile, good conductors

Question 19

What type of elements are known to be good conductors of electricity?

Accepted Answer

metals

Question 20

What is another term used for column in the periodic table?

Accepted Answer

family

Question 21

What is the name of the family that is the most reactive and never found uncombined in nature?

Accepted Answer

alkali metals

Question 22

What would happen if you decided to smash the element gold with a hammer?

Accepted Answer

It would flatten out because gold is malleable

Question 23

What is the atomic number of an element based on.

Accepted Answer

The number of protons in its nucleus

Question 24

What is the name of the scientist who invented the periodic table?

Accepted Answer

Mendeleev

Question 25

More than half of the nonmetal elements in the periodic table are _____________.

Accepted Answer

gases

Question 26

The average mass of all the isotopes of an element is also called the _____________.

Accepted Answer

atomic mass

Question 27

What is another term for row in the periodic table?

Accepted Answer

period

Question 28

What scientist's atomic model was like a watermelon or a positive sphere with negative pieces?

Accepted Answer

Thomson's

Question 29

Why are elements placed in the same column of the periodic table?

Accepted Answer

They have similar properties

Question 30

If a person is being negative then they are resembling which kind of atomic particle?

Accepted Answer

electron

Ch. 9 Test

Questions 30

Ch. 9 Test

Questions 30