Chemistry: Metals, Non-metals & Equations

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Questions and Answers

Which compound is correctly named according to the naming rules provided?

Li2O is called lithium oxide (correct)

K2O is called potassium dioxide

MgBr2 is called magnesium dibromide

NaCl is called sodium chloride (correct)

What is the symbol for hydrochloric acid, which contains hydrogen and chlorine?

H3Cl

H2Cl

HCl (correct)

Cl2H

Which of the following is a proper representation for a gas non-metal?

O2 (correct)

What are the correct components of the compound sodium hydroxide?

Na and OH Signup and view all the answers

Which of the following compounds contains a non-metal that is correctly represented?

CuCO3 Signup and view all the answers

Which compound does not follow the convention of writing the metal first?

Ammonium sulfate Signup and view all the answers

Which of the following correctly identifies the diatomic gas non-metal?

O2 Signup and view all the answers

Which compound would be named lithium phosphide following the naming rules?

Li3P Signup and view all the answers

What is the correct formula for sodium hydroxide?

NaOH Signup and view all the answers

Which of the following compounds contains a carbonate?

CuCO3 Signup and view all the answers

What is the diatomic form of nitrogen?

N2 Signup and view all the answers

What is the name of the compound with the formula CuCO3?

Copper Carbonate Signup and view all the answers

Which of the following is a solid non-metal found as an element?

Carbon Signup and view all the answers

What is the proper naming convention for Li2O?

Lithium Oxide Signup and view all the answers

What is the formula for ammonia?

NH3 Signup and view all the answers

Which of the following states that metals are found as elements?

They are found alone as pure elements Signup and view all the answers

What is the word equation for the reaction between lithium and bromine?

Lithium + Bromine → Lithium Bromide Signup and view all the answers

Which of the following represents the correct word equation for the reaction of sulfur with oxygen?

Sulfur + Oxygen → Sulfur Dioxide Signup and view all the answers

What is produced when potassium reacts with water?

Potassium Hydroxide and Hydrogen Signup and view all the answers

Which of the following describes the reaction between sodium bromide and chlorine?

Sodium Bromide + Chlorine → Sodium Chloride + Bromine Signup and view all the answers

What is the name given to the ion represented by the formula NO3?

Nitrate Signup and view all the answers

Which of the following statements about balancing chemical equations is true?

You can only add coefficients before the compounds or elements. Signup and view all the answers

When balancing the equation H2 + O2 → H2O, how many molecules of water are produced?

2 Signup and view all the answers

What is the word equation for mixing chocolate and milk to make hot chocolate?

Chocolate + Milk → Hot Chocolate Signup and view all the answers

What is the main principle behind the conservation of mass during chemical reactions?

The total mass remains the same before and after a reaction. Signup and view all the answers

What are the inputs of a chemical reaction known as?

Reactants Signup and view all the answers

What is the correct word equation for the reaction between hydrochloric acid and magnesium oxide?

Hydrochloric acid + Magnesium oxide → Water + Magnesium chloride Signup and view all the answers

What distinguishes an element from a compound?

Elements are represented by symbols, whereas compounds are represented by chemical formulas. Signup and view all the answers

In the chemical formula H2O, what does the '2' represent?

The number of hydrogen atoms in a molecule of water Signup and view all the answers

Which statement is true regarding balancing chemical equations?

Only the coefficients need to be adjusted to balance the equation. Signup and view all the answers

What aspect of mass is measured when discussing conservation of mass in chemical reactions?

The total mass of reactants and products Signup and view all the answers

Which chemical reaction is correctly represented by the symbol equation Na + O2 → Na2O?

Sodium reacts with oxygen to produce sodium oxide. Signup and view all the answers

Study Notes

Periodic Table and Chemical Reactions

Metals are typically located on the left side of the periodic table, while non-metals are found on the right side.
Chemical equations can be expressed as word equations or symbol equations.

Naming Compounds

Compounds comprising a metal and a non-metal are named by writing the metal first followed by the non-metal ending in "ide".
Examples:
- Li + O2 → Li2O (lithium oxide)
- Na + Cl → NaCl (sodium chloride)
Special names for common compound parts:
- Sodium hydroxide = NaOH
- Copper carbonate = CuCO3
- Hydroxide = OH, Sulfate = SO4, Nitrate = NO3, Carbonate = CO3

Element Symbols

Metals show as elements: Li (Lithium), Fe (Iron), Au (Gold).
Solid non-metals represented as elements: C (Carbon), P (Phosphorus), I (Iodine), S (Sulfur).
Gaseous non-metals are typically diatomic: H2 (Hydrogen), O2 (Oxygen), N2 (Nitrogen), Cl2 (Chlorine), etc.
Notable compounds:
- Hydroxide (OH), Methane (CH4), Ammonia (NH3).

Chemical Reaction Practice

Example word equations:
- Lithium + Bromine → Lithium Bromide
- Sulfur + Oxygen → Sulfur Dioxide
- Potassium + Water → Potassium Hydroxide + Hydrogen

Conservation of Mass

The principle states that mass cannot change during a chemical reaction; it remains constant.
Reactants are substances that undergo change, while products are the resulting substances after the reaction.
No atoms are created or destroyed in a chemical reaction; only their bonding changes.

Balancing Chemical Equations

Balancing involves ensuring the same number of each type of atom on both sides of the reaction.
The subscript indicates the number of atoms of that element, whereas a coefficient applies to all elements in that compound.

Example Chemical Formulas

HO: 1 Hydrogen atom, 1 Oxygen atom.
CO: 1 Carbon atom, 1 Oxygen atom.
H2O: 2 Hydrogen atoms, 1 Oxygen atom.

Success Criteria

Ability to combine symbols appropriately to form compounds.
Capability to convert word equations into symbol equations.
Understanding the concept of balancing symbol equations in chemical reactions.

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Description

This quiz covers the placement of metals and non-metals in the periodic table and the conversion between word and chemical symbol equations. You will also practice naming various compounds based on established rules. Test your understanding of these fundamental chemistry concepts!