Which is the stronger acid?

The strongest bases have pH values close to

If an acid is combined with a base of equal strength, the result will most likely be

Acid turns to red litmus paper to blue.

Bases are usually identified by their sweet taste and

are known to turn blue litmus into red.

Acidic substances are usually identified by their sour taste and are known to turn blue litmus into red.

The pH is an abbreviation for the "power of helium" that measures

the acidity of a solution.

Neutralization occurs when an acid reacts with an equivalent amount of base and forms a neutral solution containing salt and water.

pH number 3

pH number 7

pH number 14

Turns red litmus paper blue

Turns blue litmus paper red

Red litmus paper stays red AND blue litmus paper stays blue

Has more OH^- ions than H⁺ ions

Has more H+ ions than OH- ions

Has equal amounts of OH^- and H⁺ ions

Pure Air

Chocolate Chip Ice Cream

Sugar and Water

Black Coffee

Salad Dressing

Paint

What kind of mixture is shown in the picture?

What kind of mixture is shown in the picture?

What kind of mixture is shown in the picture?

What kind of mixture is shown in the picture?

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

A student pours 5.49 g hydrochloric acid (HCl) into an open beaker that contains a piece of magnesium (Mg). The Total mass of the product is 5.73 g. What was the mass of the magnesium?

A student heated a 10 gram sample of a chemical in an open container. A chemical reaction occurred, and the mass of the sample was measured again. The mass of the sample was found to be less than before the reaction. Which of the following best explains the decrease in mass of the sample?

A student dissolved 25 grams of salt into 1,000 grams of water. What should the mass of the saltwater mixture be?

True or False

The mass of the reactants in a chemical equation must equal the mass of the products.

A chemical change occurs when:

Which of the following characteristics is shared by all chemical reactions?

No new substance created

New substance created

Logs of pine wood are burning in a fireplace. What is a sign that a chemical change is happening to the wood?

Logs of pine wood are burning in a fireplace. What is a sign that a chemical change is happening to the wood?

Which of the following is not a sign of chemical change?

Which of the following is a chemical change?

Which of the following is a chemical change?

True/False: When a substance undergoes a physical change the particles moves to new positions, speed up or slow down.

Which term matches the following definition?

Definition: a usually reversible change in the physical properties of a substance, as size or shape. This change does not result in a change chemical properties or composition (make up), as it is the same substance before and after the change.

Which term matches the following definition?

Definition: a characteristics of chemicals that are not associated with a change in it's chemical composition. Example include size, shape, colour, density, mass, volume, length and lustre. An example of this for iron is it is silver, shiny and dense.

Which term matches the following definition?

Definition: a characteristics of chemicals that are associated with a change in it's chemical composition (make up). Example include flammability and reactivity. An example of this for Iron is it combines with oxygen in the presence of water to form rust (iron oxide).

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?

Which of the following examples provides evidence of a PHYSICAL change?

Which of the following options provides evidence of a CHEMICAL change?

Which observations prove a chemical change occurred ?

When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?