Matter & pH Esthi Exam

What color does blue litmus paper turn when placed in an acid?

Which of the following conditions is an example of chemical change?

What kind of substance does pH indicate the acidity or alkalinity of?

The term used to identify anything that occupies space and has weight is called:

Two or more atoms joined together by a chemical bond is a(n):

All of the following statements regarding the pH scale are true EXCEPT:

Water molecules have two hydrogen atoms and one:

How many elements occur naturally?

Acids tend to taste:

Why is skin a solid?

Which elements is the most abundant in the earth's crust and the second most abundant element in the earth's atmosphere

When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered:

electrons have this type of charge

Matter with definite weight and volume but no definite shape is called:

What ingredient is listed as the primary ingredient on many skin care products?

Skin comprises two solids, which are carbon and sulfur and three gases, which are hydrogen, nitrogen and:

All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of:

Atoms have three main parts: protons, neutrons and:

The simplest atomic structure is:

The scientific study of matter and the physical and chemical changes of matter is known as:

Matter with definite weight but indefinite volume and shape is called:

The atomic number of a particular element indicates:

All matter that is not alive, has never been alive and does not contain carbon, such as rocks, water and minerals:

What is a negatively charged ion called?

Alkalis tend to taste:

A solid is defined as:

Basic substances that cannot be broken down into simpler substances are called:

Why is pure water considered a neutral substance?

In chemistry, pH stands for:

Which of the following is NOT an example of a physical change?