Chemical Changes Section 3

Question 1

A property of matter that describes a substances ability to participate in chemical reactions

Answer 1

Chemical property

Examples:
Flammability
Reactivity

Question 2

What indicates a chemical change?

Answer 2

Fizzing, bubbling, burning, changing color, flashing light, souring milk and odor

Question 3

The capacity of a substance to combine chemically with another substance

Answer 3

Reactivity

Question 4

A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness

Answer 4

Physical property

Examples: solubility, density

Question 5

The tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object

Answer 5

Inertia

An object at rest remains at rest, an object in motion remains the in motion

Question 6

A change that occurs when one or more substances change into entirely new substances with different properties

Answer 6

Chemical change

Examples:
Soured milk
Rusted metal
Mixed liquids

Question 7

A change of matter from one form to another without change in chemical properties

Answer 7

Physical change

Examples:
Crushed can
Melted ice-pops
Cut down trees

Question 8

A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe

Answer 8

Weight

Question 9

A measure of the amount of matter in an object; a fundamental property of an object that is not affected by the forces that act on the object, such as the gravitational force

Answer 9

Mass

Units used to measure mass:
Grams
Kilograms
Newtons

Question 10

The curve at a liquids surface by which one measures the volume of liquid

Answer 10

Meniscus

Question 11

A measure of the size of a body or region in three dimensional space

Answer 11

Volume

Units used to measure volume:
Cubic centimeters
Cubic meters

Question 12

Anything that has mass and takes place space

Answer 12

Matter

Question 13

The ratio of the mass of a substance to the volume of the substance; commonly expressed as grams per cubic centimeter for solids and liquids grams per liter for gases

Answer 13

Density

Question 14

How would you measure the density of a solid?

Answer 14

Put it in water and see if it floats (light density) or sinks (heavier density)

Question 15

How would you measure the volume of an irregular solid?

Answer 15

First measure the bottom of the meniscus then drop the irregular object in the tube(the water will rise) now measure bottom of meniscus again. Minus the first measurement from the second measurement and multiply answer by 1 cubic centimeter

Question 16

Describe concepts of liquid layers (dense vs least dense)

Answer 16

The densest layer is on the bottom. The least dense layer is on top. The order of layers shows the order of increasing density.

Question 17

Describe the concept of changes (physical vs. chemical)

Answer 17

Chemical change-happens when one or more substances are changed into new substances that new and different properties.

Physical change-is a change that affects one or more physical properties of a substance.