Chemistry

Elements

100

What is the chemical symbol for Nitrogen?

N

200

How many types of atoms make up an element?

One

300

What is the atomic number of Ruthenium?

 Ru - 44

400

Element X has 53 protons and 73 neutrons. What is the name of this element?

Iodine (I)

500

Which groups are the two metalloids that have the same number of electrons, neutrons, and protons a part of? (Include the element and their appropriate group)

Boron - Group 13

Silicon - Group 14

Atoms

100

The ______ has a positive charge in an atom.

Protons

200

What are the three parts of an atom?

Proton, Neutron, Electron

300

Where is the mass of the atom located?

Nucleus

400

What is the latin term for atom?

Uncuttable

500

Draw a Bohr model of an atom with 6 protons, 6 neutrons, and 6 electrons.

There should be 6 protons and neutrons in the nucleus with 2 electrons in the first outer ring, and 4 electrons in the second outer ring.

Substances

100

What are the two types of substances?

Elements and Compounds

200

What is the difference between an element and a compound?

Elements are made up of only one type of atom and Compounds are made up of at least two different types of atoms.

300

What is an example of a substance that is a molecule but not a compound?

Anything that has more than two atoms but only one element.

400

Give two examples of compounds.

Answers will vary. Must have at least two elements.

500

Give one similarity and one difference between substances and mixtures.

Similarity:

-Both have more than two atoms

Difference:

-Mixtures are not all chemically bonded

Mixtures

100

What are the two types of mixtures?

Homogeneous and Heterogeneous

200

What is another name for a homogeneous mixture?

Solution

300

Give an example of a heterogeneous mixture.

Trail Mix

400

Why is lemonade a mixture and not a compound?

The chemical properties of the individual atoms remain the same. The lemons are sour and the sugar makes it sweet. The more lemons you add, the more sour the lemonade tastes.

500

Draw the chemical structure of a mixture that is heterogeneous (shapes are okay for the structure)

There should be at least two shapes and they should not be mixed together.

Ions and Isotopes

100

What subatomic particle changes in isotopes?

Neutron

200

What subatomic particle changes in ions?

Electrons.

300

How many protons and electrons are in C⁺?

6 protons and 5 electrons.

400

How many protons and neutrons are in Bromine-84?

35 protons and 49 neutrons.

500

What element has the same atomic number as the total number of electrons in the following ions.

B^2-

Ne³⁺

Nitrogen (the atomic number is 7). B^2- and Ne³⁺ both have seven electrons.