Chem review part 1: sig figs, scientific notation, atomic structure, periodic table

Question 1

Which scientist determined the numerical charge of the electron?

Accepted Answer

Millikan

Question 2

What is the mass of a neutron?

Accepted Answer

1 amu

Question 3

What is the standard unit for mass?

Accepted Answer

kilograms

Question 4

How many places past the decimal should be in the answer to this problem? 3.185 + 2.33

Accepted Answer

2

Question 5

What is the standard unit for energy?

Accepted Answer

Joule

Question 6

Why does ionization energy decrease as you move down a group?

Accepted Answer

The atomic radius gets bigger

Question 7

Convert this number to scientific notation: 0.0031200

Accepted Answer

3.12 x 10 ^ -3

Question 8

Which one of these numbers is in correct scientific notation?

Accepted Answer

7.1 x 10 ^ 3

Question 9

Which scientist arranged the elements according to atomic mass?

Accepted Answer

Mendeleev

Question 10

Which law states that matter can not be created or destroyed?

Accepted Answer

Conservation of Mass

Question 11

Why do we use the metric system?

Accepted Answer

Most units are in multiples of 10

Question 12

Which of the following is NOT a chemical change?

Accepted Answer

Boiling

Question 13

In the alpha decay reaction of radium shown below, what is the missing particle?

Accepted Answer

helium nucleus

Question 14

Which subatomic particle plays the greatest role in determining the PROPERTIES of an element?

Accepted Answer

Electron

Question 15

Which group (column) has a charge of +2?

Accepted Answer

2

Question 16

How many valence electrons does Oxygen have?

Accepted Answer

6

Question 17

Which of the following is a chemical property?

Accepted Answer

Flammability

Question 18

What is the approximate atomic mass of Lithium?

Accepted Answer

7

Question 19

In gamma decay, what happens to the atomic mass of an element?

Accepted Answer

Stays the same

Question 20

What is the charge of an electron?

Accepted Answer

-1

Question 21

"Normal" carbon is called Carbon-12. What is different about the isotope Carbon-13?

Accepted Answer

Number of neutrons

Question 22

Which subatomic particle defines the element? ex: Carbon is #6. This refers to the number of..?

Accepted Answer

Proton

Question 23

How many significant figures are in this number? 0.000352020

Accepted Answer

6

Question 24

Atomic radius __________ going down a group and ___________ going across a row

Accepted Answer

Increases, Decreases

Question 25

What is the standard unit for temperature in Chemistry?

Accepted Answer

Kelvin

Question 26

The smallest particle of an element that maintains the properties of that element is called...

Accepted Answer

Atom

Question 27

What is the charge of Fluorine?

Accepted Answer

-1

Chem review part 1: sig figs, scientific notation, atomic structure, periodic table

Questions 27

Chem review part 1: sig figs, scientific notation, atomic structure, periodic table

Questions 27