G7 Science - Unit 8 acids and alkali ( chemical reactions)

Multiple Choice

The pH scale tells how acidic or basic a substance is. The scale goes from _____ to _______

• 1-10

• 0-14

• 1-14

• 1-100

Multiple Choice

Substances with a pH of 7 are

• Acidic

• Basic

• Neutral

• Saturated

Multiple Choice

If we add EQUAL amounts of equally strong Acid and Base to a solution, we call this

• Supersaturated

• Dangerous

• Neutralization

• Dilution

Multiple Choice

Choose the substance that is the most acidic.

• Milk

• Soap

• Coffee

• Stomach acid

Multiple Select

What would be the two new compounds that would be formed in this reaction?

HCl + NaOH -> ______? + ______?

• NaCl

• ClOH

• HNa

• H₂O

Multiple Choice

This substance releases OH- into solution

• Acid

• Base

• Neutral

Multiple Choice

Which solution releases H+ in solution?

• Base

• Acid

• Buffer

• Water

Multiple Choice

Metal + Oxygen -> __________________________

• Metal Oxide + Water

• Metal Oxide + Hydrogen

• Metal Oxide

• Metal Hydroxide + Hydrogen

Multiple Choice

What is the word equation for Neutralization?

• Acid + Alkali ---> Salt + Water

• Acid + Carbonate ---> Salt + Water + Carbon Dioxide

• Acid + Alkali ---> Salt + Water + Carbon Dioxide

• Acid + Carbonate ---> Salt + Water

Multiple Choice

What are the two products of Neutralization?

• Salt + Water

• Salt + Water + Carbon Dioxide

• Salt + Water + Hydrogen

Multiple Choice

Which is a way Salt can be formed?

• Acid + Alkali

• Neutralization

• Metal + Acid

• All of the above

Multiple Choice

The process by which one or more substances change to produce one or more different substances

• Chemical Process

• Reactant

• Chemical Reaction

Multiple Choice

The simplest unit of a chemical compound that can exist; formed when TWO or more atoms join together chemically

• Atom

• Compound

• Molecule

Multiple Choice

A substance produced during a chemical reaction

• Product

• Reactant

• Properties

Multiple Choice

A substance that takes part in and undergoes change during a reaction

• Product

• Molecule

• Reactant

Multiple Choice

The name of a new substance that is formed when TWO or more elements are chemically bonded during a chemical reaction

• Product

• Compound

• Molecule

• Atom

Multiple Choice

A mixture containing a solvent and at least one solute that has the same properties is called _____________

• Suspension

• Solution

• Mixture

• Colloid

Multiple Choice

A(n) ___________ is any substance that changes color in the presence of an acid or base (alkali).

• indicator

• amphoteric

• salt

• water

Multiple Choice

The neutralization reaction between an acid and a base produces a salt and...

• indicator

• amphoteric

• salt

• water

Multiple Choice

The neutralization reaction between an acid and a base produces a _________ and water.

• indicator

• amphoteric

• salt

• water

Multiple Choice

Sodium hydroxide: NaOH

is used for:

• Digestive juices in stomach

• Deodorant, antacid

• Car batteries

• Drain cleaner, soap production

Multiple Choice

Hydrochloric acid: HCl

is used for:

• Digestive juices in stomach

• Deodorant, antacid

• Car batteries

• Drain cleaner, soap production

Multiple Select

What are some physical properties? SELECT ALL THAT APPLY.

• texture

• color

• reactivity

• density

Multiple Choice

What are chemical properties?

• Chemical properties are not affected by exposure to other substances.
• Chemical properties are related to the physical appearance of a substance.
• Chemical properties are only relevant in biological reactions.
• Chemical properties are characteristics of a substance that describes its ability to change into other substances

Multiple Choice

The ability to burn is a chemical property.

• True

• False

Multiple Choice

The substances that undergo chemical changes are...

• Inhibitors
• Reactants
• Catalysts
• Products

Multiple Select

What are some physical changes?

• Formation of precipitate

• Gas production

• Ne elements are formed

• color change

Multiple Choice

Did a chemical reaction occur

• yes the 2 reactants turned into 1 product

• yes the 2 products turned into one reactant

• There is not enough information

• no

Multiple Choice

Which one is NOT a property.

• smell

• color

• atom

• boiling point

Multiple Choice

Which of these are made of atoms?

• Only trees

• Only hamburgers

• Only tables

• Everything

Multiple Choice

What is a property?

• A way to describe a substance

• A type of experiment

• A specific element

• The name of a certain atom

Multiple Choice

What is a molecule?

• A type of scientist

• A group of atoms

• A special tool

• A place in Spain

Multiple Choice

What is a "melting point"?

• how hot a solid has to be before melting

• how hot a cup of coffee is

• how hot it is on the first day of Summer

• how hot the inside of a Hot Pocket is

Multiple Choice

What is a "boiling point"?

• how hot a plasma has to be before morphing

• how hot an iceberg is before freezing

• how hot a liquid has to be before evaporating

• how hot Tom Holland has to be before becoming Spiderman

Multiple Choice

Different substances have...

• different properties

• all the same properties

Multiple Choice

True or False
In a chemical reaction, no new atoms are created, and no atoms are destroyed. 

• true
• false

Multiple Choice

Identify the Reactants in this equation.

• A

• B