Intro to Chem Equations

You are expected to fill out page 17 in your notes as you work through this lesson

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​Are your notes out??

Multiple Select

Which of the following are indicators of a chemical change?

• light

• change in temp

• precipitate formation

• shape

• roughness

Multiple Choice

What shows the direction of a chemical equation and separates the reactants from the products?

• plus sign

• arrow

• coefficients

• letter symbols

Match

Match each letter symbol to the correct state of matter

• (s)

• (l)

• (g)

solid

liquid

gas

• solid

• liquid

• gas

Labeling

Label the parts of the chemical equation

Drag labels to their correct position on the image

reactant side

product side

Coefficient

Arrow

Plus Sign

Letter Symbol

Subscript

Fill in the Blanks

The Conservation of Mass states that

cannot be created or destroyed.

Labeling

Label the number of Hydrogen and Oxygen atoms on each side of the equation

Drag labels to their correct position on the image

2

3

2

4

4

2

4

1

4

Multiple Choice

Is the previous equation balanced?

• yes

• no

Let's check your understanding with some questions

Multiple Choice

What is the Law of Conservation of Mass?

• It states that no matter can be created or destroyed.

• It states that matter can be created or destroyed.

• It sates that no energy can be created or destroyed.

• It state that no sound can be created or destroyed.

Multiple Choice

What is a coefficient?

• The small number on the right of the chemical symbol.

• The large number in front of a chemical formula.

• The number in between the chemical symbols.

• The number behind a chemical formula.

Multiple Choice

What is the part of the chemical equation in red called? Fe + S --> FeS

• products

• yield

• reactants

• chemical formula

Multiple Choice

What is the little number after an element in a chemical equation called? Example O₂

• coefficient

• atom

• subscript

• equation

Multiple Choice

How many elements are in C₆H₁₂O₆?

• 1

• 3

• 2

• 4

Multiple Choice

Element or compound? H₂O

• element

• compound

Categorize

Options (6)

Carbon (C)

Iron (Fe)

Xenon (Xe)

Iron II chloride (FeCl2)

Phosphorus tribromide (PBr3)

Carbon Dioxide (CO2)

Organize these options into the right categories

Element

Compound

Multiple Choice

In a chemical equation elements or compounds that are produced and are located the right side are called...

• reactants

• products

Multiple Choice

In a chemical equation elements or products that enter a chemical equation and are located on the left side are called...

• reactants

• products

Multiple Choice

Consider the chemical equation CH₄ + 2 O₂ → CO₂ + 2 H₂O. In this equation, CH₄ is a

• product
• reactant
• displacement

Multiple Choice

The substances that go into a chemical reaction are found on the ___ side of the arrow in a chemical equation. They are called the ___.

• left, reactants

• left, products

• right, reactants

• right, products

Multiple Choice

The substances that come out of a chemical reaction are found on the ___ side of the arrow in a chemical equation. They are called the ___.

• left, reactants

• left, products

• right, reactants

• right, products

Multiple Choice

What state of matter is this substance?

• solid

• liquid

• gas

• aqueous

Review of Ions and Bonding

Your notes on pages 12-13 will be very helpful for answering these questions

Multiple Choice

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

Multiple Choice

When an atom loses a valence electron, it becomes a(n) _____________ ion.

• positive
• negative
• neutral
• polyatomic

Multiple Choice

When an atom gains a valence electron, it becomes a(n) ____________ ion

• positive

• negative

• neutral

• polyatomic

Multiple Choice

We call positively charged ions _________.

• cations

• anions

• ionic

• covalent

Multiple Choice

We call negatively charged ions __________.

• cations

• anions

• ionic

• covalent

Multiple Choice

What usually forms the positive ion?

• Metal
• Non Metals
• None
• both

Multiple Choice

When forming an ionic bond, a metal atom

• Gains electrons to form a cation
• Loses electrons to form a cation
• Gains electrons to form an anion
• Loses electrons to form an anion

Multiple Choice

What usually forms the negative ion?

• metals

• nonmetals

• none

• both

Multiple Choice

When forming an ionic bond, a nonmetal atom

• gains electrons to become a cation

• loses electrons to become a cation

• gains electrons to become an anion

• loses electrons to become an anion

Multiple Choice

Which of the following elements GAINS 2 electrons in order to fill its outermost energy level?

• cesium

• magnesium

• phosphorus

• sulfur

• iodine

Multiple Choice

How does calcium become an calcium ion?

• it loses 2 electrons

• it gains 2 electrons

• it gains 6 electrons

• it loses 6 electrons

Time to review ionic vs covalent bonds and naming covalent bonds

Multiple Choice

The chemical bond between a non-metal and another non-metal will be a ________ bond.

• metal

• ionic

• covalent

• polar

Multiple Choice

The chemical bond between a metal and a non-metal will be a _____ bond.

• metal

• ionic

• covalent

• polar

Multiple Choice

In a covalent bond, electrons are

• Gained

• Pulled apart

• Shared

• In the nucleus

Multiple Choice

In ionic bonds, electrons are

• Gained or lost

• Shared

• Mixed randomly

• Negatively charged

Multiple Choice

Predict the bond that will form between Be and F.

• Ionic
• Covalent

Multiple Choice

Predict the bond that will form between Se and Cl.

• Ionic
• Covalent

Multiple Choice

Name CCl₄

• carbon carbon tetraiodide
• carbon tetrachloride
• monocarbon tetrachloride
• water

Multiple Choice

Give the formula for oxygen dichloride

• OCl₂
• O₂Cl₂

• OCl
• O₂Cl

Multiple Choice

What is the correct name for C₄H₆?

• Carbon Hexahydride
• Pentacarbon Pentahydride
• Hexacarbon Tetrahydride
• Tetracarbon Hexahydride

Multiple Choice

What is the correct name for NO?

• Mononitrogen Monoxide
• Nitrogen Monoxide
• Mononitrogen Dioxide
• Nitrogen Oxide

Multiple Choice

What is the formula for Tricarbon Octahydride?

• Ca₃O
• C₂H₈
• C₃H₈
• Ca₃H₈

Multiple Choice

P₂O₅

• Phosphorus Oxide
• Pentaphosphorus Dioxide
• Diphosphorous pentoxide
• Phosphoric Oxygen

Multiple Choice

K ⁺  and  N^-3

• KN
• KN₃
• K₃N₃
• K₃N

Multiple Choice

The chemical formula for an ionic compound of potassium and oxygen is

• KO.
• K₂O.
• K₂O₂.
• KO₂.