Atoms Review

Question 1

A carbon isotope has a mass number of 13, what is the total number of particles in the nucleus?

Accepted Answer

13

Question 2

Rutherford discovered that this is made up of mostly empty space.

Accepted Answer

atom

Question 3

A substance that contains only one kind of matter:

Accepted Answer

element

Question 4

How many energy levels with a Bohr diagram for Beryllium (Be) have?

Accepted Answer

2

Question 5

Two atoms of the same element always have the same number of this particle.

Accepted Answer

Proton

Question 6

Where can the electrons be found in an atom?

Accepted Answer

In the nucleus, In the energy levels

Question 7

Where can the neutrons be found in an atom?

Accepted Answer

In the nucleus

Question 8

This particle has a positive charge in an atom.

Accepted Answer

Proton

Question 9

Why are noble gases non-reactive?

Accepted Answer

Filled outer shell of valence electrons

Question 10

He used alpha particles & gold foil to discover atoms are made of mostly empty space

Accepted Answer

Rutherford

Question 11

The smallest part of a compound that retains the properties of the compound

Accepted Answer

Molecule

Question 12

Elements in the same column on the periodic table have similar chemical reactivity because:

Accepted Answer

Group or Family

Question 13

Atoms that have the same atomic number but a different atomic mass are called:

Accepted Answer

isotopes

Question 14

Where can the protons be found in an atom?

Accepted Answer

In the nucleus

Question 15

A calcium atom will react with sulfur. Name an element that will react with Ca the same way.

Accepted Answer

Oxygen

Question 16

This scientist published an atomic theory in 1808. His theory was used in later atomic models.

Accepted Answer

Dalton

Question 17

What does letter D represent?

Accepted Answer

Atomic Mass

Question 18

Substances made up of 2 or more elements that can't be separated by physical means:

Accepted Answer

Compound

Question 19

This is the total number of protons and neutrons in the nucleus of an atom.

Accepted Answer

Mass Number

Question 20

Nitrogen has atomic number 7 and mass 15. How many electrons does it have?

Accepted Answer

7

Question 21

Anything that has mass and takes up space

Accepted Answer

Matter

Question 22

The "building blocks" of matter

Accepted Answer

Atoms

Question 23

This particle carries a negative charge and has almost no mass.

Accepted Answer

Electron

Atoms Review

Questions 23

Atoms Review

Questions 23