What is a chemical?

• A substance

• An atom

• A molecule

• A reaction

What is the result when a chemical is used?

• Nothing will happen

• Only the atoms will change

• Only the molecules will change

• Both the atoms and molecules will react

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Each of the following are chemicals can be used on the skin except______________

• hand sanitizers

• moisturizers

• detergent

• sunscreen

What will take place when neutralization takes place?

• The ph level will be weak

• The ph level will be 7

• Nothing will happen

• The ph level will be too strong

For neutralization to take place there must be____________

• a combination of H⁺ (Hydrogen) ions and OH^- (Hydroxide)

• just H⁺ (Hydrogen) ions only

• just OH^- (hydroxide) ions only

• none of the above

Tags

NGSS.MS-PS1-5

How can a solution be separated from water?

• Filtration

• Distillation

• Boiling

• All the above

Which of these terms best describes suspension:

• Homogeneous

• Homogeneous and heterogeneous

• Heterogeneous

• Hydrocolloid

A colloid must measure to __________________

• less than 10,000 angstroms

• 10,000 angstroms

• greater than 10,000 angstroms

• 10- 10,000 angstroms

When testing for an acid which litmus test should be applied?

• None

• Red limust test

• Blue limust test

• Red and blue litmus test

Which of these can be considered electrolytes ?

• Salts

• Acids

• Base

• All of the above