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Mr. Sloan's Chemistry Review 1 Answer Key

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Matter
#1

The smallest building blocks of matter are?

Atoms

#2

What are the two types of Pure Substances?

Elements and Compound.

#3

What are the two main groups of Mixtures?

Homogeneous and Heterogeneous.

#4

Solutions would be classified as what type of Mixtures.

Homogeneous

#5

Name the three types of Heterogeneous mixtures.

  1. Mechanical mixtures.
  2. Suspensions.
  3. Colloids.
More Matter
#1

The person who developed a model of the atom which included energy levels.

Neils Bohr

#2

Name the three types particles that make up an atom.

  1. Protons
  2. Electrons
  3. Neutrons
#3

French scientist Antoine Lavoisier is famous for...

The law of convervation of mass.

#4

What makes up most of the mass of an atom.

The protons and neutrons.

#5

What part of the atom makes up 99.9% of the volume of an atom?

Electrons.

Periodic Table
#1

What are the three main types of elements found on the periodic table?

  1. Metals
  2. Non-Metals
  3. Metalloids
#2

How many non-metals are there?

17

#3

At SATP (25°C), what are the only two elements that are in the liquid state?

Mercury and Bromine.

#4

Name the four group of elements that you must know?

  1. Alkali Metals
  2. Alkaline Earth Metals
  3. Halogens
  4. Noble Gases
#5

How can you tell how many protons and electrons will be in an atom?

How to figure out how many neutrons will be in an atom?

Atomic Number

Atomic Mass or Molar Mass - Atomic Number = # of Neutrons

Elements & Compounds
#1

An element with a different number of neutrons are called...?

Isotopes

#2

A compound made from a non-metal and another non-metal are called...?

Molecular Compounds

#3

Two metals mixed together forms a mixture which is called...?

An alloy.

#4

What charge do all alkaline earth metals have?

2+

#5

There are 8 diatomic elements and two polyatomic elements. Name the two polyatomic elements with the corrent number of atoms.

P4

S8

Equations & Balancing
#1

Write the formula for sodium sulfate and identify whether it is ionic or covalent.

Na2SO4

Ionic

#2

Write the name for the following formula and whether it is ionic or covalent.

O2H4

dioxygen tetrahydride

Molecular

#3

Write the name for the following formula and whether it is ionic or covalent.

Fe2(CO3)3

iron (III) carbonate

Ionic

#4

Balance the following formula and identify the reaction type.

O2(g) + H2(g) → H2O(l)

O2(g) + 2H2(g) → 2H2O(l)

Simple Composition or Formation

#5

Balance the following formula and identify the reaction type.

C4H8(g) + O2(g) → CO2(g) + H2O(l)

Hint: Start with carbon & hydrogen and leave oxygen till last.

C4H8(g) + 6O2(g) → 4CO2(g) + 4H2O(l

Hydrocarbon Reaction

Final Question

Aqueous hydrogen chloride (hydrochloric acid) spills on your floor. You neutralize the acid spill by adding sodium hydroxide to it. Predict the products that are formed and write down the balanced equation with states or each compound. What type of reaction is this?

Hint: H2O should be written as HOH

HCl(aq) + NaOH(aq) → NaCl(aq) + HOH(l)

Double Replacement = compound + compound → compound + compound