Periodic Table and Atomic Structure/History Review

Question 1

As particles are heated and the temperature increases, the movement of the particles

Accepted Answer

increases

Question 2

Mendeleev was not the first to organize the elements, but he was the first to

Accepted Answer

predict properties of unknown elements

Question 3

The elements in group 1 are called ______

Accepted Answer

Alkali Metals

Question 4

What does the atomic mass represent?

Accepted Answer

Number of Protons and Neutrons

Question 5

Which type of elements make up the majority of the Periodic Table?

Accepted Answer

Metals

Question 6

Which law states that as pressure increases, volume decreases? (Inversely proportional)

Accepted Answer

Boyles

Question 7

How many valence electrons does Oxygen have?

Accepted Answer

6 Valence Electrons

Question 8

Which pair of elements have the most similar chemical properties?

Accepted Answer

Li, Rb

Question 9

An element that is a good conductor of heat and is malleable or ductile is known as a

Accepted Answer

Metal

Question 10

What part of the atom is represented by the red circles?

Accepted Answer

Protons

Question 11

Who created the atomic model shown here?

Accepted Answer

Niels Bohr

Question 12

How many valence electrons does Carbon (C) have?

Accepted Answer

4 Valence Electrons

Question 13

Electrons always have what kind of charge?

Accepted Answer

Negative

Question 14

Radioactive atoms

Accepted Answer

all of the above

Question 15

The elements in groups 3 - 12 are called ______

Accepted Answer

Transition Metals

Question 16

Elements in Period 3 have:

Accepted Answer

3 Orbitals

Question 17

Pressure of a gas measures

Accepted Answer

The amount of force the particles are pushing on an area.

Question 18

What element has 18 protons?

Accepted Answer

Argon

Question 19

Which statement is NOT true of radioactive decay?

Accepted Answer

The identity of the atom remains the same.

Question 20

What does the number 12 represent in this element's periodic table diagram?

Accepted Answer

Atomic Number, Number of Protons

Question 21

The stability of an isotope is based on its

Accepted Answer

ratio of neutrons to protons

Question 22

The elements in group 17 are called ______

Accepted Answer

Halogen

Question 23

What can you determine from this diagram?

Accepted Answer

The element is Nitrogen, The element has 5 valence electrons

Question 24

Group 2, Period 3 is which element?

Accepted Answer

Magnesium

Question 25

The model of an atom that described it as mostly open space but with a + charge at its center

Accepted Answer

Rutherford

Question 26

Beta particles are fast moving_______ given off during radioactive decay.

Accepted Answer

electrons

Question 27

The half-life for iodine-131 is 8 days. This means that

Accepted Answer

It takes 8 days for half the material to decay

Question 28

Atoms with different number of neutrons but the same number of protons are considered

Accepted Answer

Isotopes

Question 29

What subatomic particles are represented by the green circles?

Accepted Answer

Electron

Question 30

Vertical columns on the periodic table are called _____?

Accepted Answer

Families, Groups

Question 31

Horizontal rows on the periodic table are called _____?

Accepted Answer

Periods

Question 32

An element is known to have 2 energy orbitals and 7 valence electrons. What element is it?

Accepted Answer

Fluorine

Question 33

The isotope Ca - 42 has how many protons, neutrons, and electrons?

Accepted Answer

20 Protons, 22 Neutrons, 20 Electrons

Question 34

Which element has 12 Neutrons, 11 Protons, and 11 Electrons?

Accepted Answer

Sodium

Question 35

What happens to the volume of a gas, in a flexible container, as the pressure increases?

Accepted Answer

decreases

Periodic Table and Atomic Structure/History Review

Questions 35

Periodic Table and Atomic Structure/History Review

Questions 35