Explain Characteristic Properties of Substances

Question 1

All substances have ___ and ___

Answer 1

Physical, Chemical

Question 2

Physical Properties refer to:

Answer 2

Observed properties of the substance and those that can change the state without changing the identity of the substance

Question 3

Boiling Liquid Water is an example of ___ because:

Answer 3

Physical Properties because the steam that is produced is a gaseous state of water with the same molecular formula as liquid water (Hydrogen atoms and one Oxygen), its identity has not changed

Question 4

Can vapor be condensed to form liquid water again?

Answer 4

Yes

Question 5

Other Physical Properties include:

Answer 5

Density, Melting Point, Boiling Point, Malleability, Specific Heat Capacity, and Conductivity

Question 6

What are Intensive Physical Properties?

Answer 6

Boiling Point, Melting Point, Luster

Question 7

Intensive Physical Properties do not depend on the amount of the ___ present

Answer 7

Substance

Question 8

What are Extensive Physical Properties?

Answer 8

Mass and Volume)

Question 9

Extensive Physical Properties can change depending on the amount of ___ present

Answer 9

Matter

Question 10

Chemical Properties depend on the ___ ___ of the substance

Answer 10

Chemical Reactivity

Question 11

When a substance Chemically reacts with another substance, it results in:

Answer 11

Formation of a new substance with a different composition and identity

Question 12

What’s an example of an Extensive Physical Property?

Answer 12

A sugar cube being cut in half, changing the volume of each half

Question 13

How sugar reacts when a sugar cube is burned is considered a:

Answer 13

Chemical Property because the sugar combines with Oxygen, converting sugar to the new substances carbon dioxide and water

Question 14

What is the ratio for Mass to Volume?

Answer 14

Density

Question 15

Denser substances will sink, while less dense Substances will ___

Answer 15

Float

Question 16

Solid water (ice) is ___ dense than liquid water

Answer 16

Less

Question 17

Water is a ___ molecule

Answer 17

Polar

Question 18

What has negatively charged (oxygen end) and positively charged (hydrogen end) sides?

Answer 18

Water

Question 19

What allows Water to form Hydrogen Bonds and demonstrate both cohesive and adhesive properties?

Answer 19

The Polarity of Water

Question 20

What is Cohesion?

Answer 20

A measure of how well similar molecules stick to each other or group together

Question 21

Water Molecules are cohesive because:

Answer 21

They are attracted to other water molecules

Question 22

The cohesiveness of Water allows it to travel through small capillaries without using ___

Answer 22

Energy

Question 23

Cohesiveness creates surface tension by:

Answer 23

Creating a tight-knit layer of water molecules on the surface of any body of water

Question 24

Breaking up the multitude of Hydrogen Bonds between Water requires a lot of energy, so water is said to have:

Answer 24

High specific heat and high heat of vaporization

Question 25

What does Water boil at?

Answer 25

100 Degrees C

Question 26

Ice floats on Water because:

Answer 26

It has lower density than liquid water

Question 27

Most substances have greater densities in ___ form

Answer 27

Solid

Question 28

Adhesiveness is:

Answer 28

A measure of how well dissimilar particles or surfaces cling to one another

Question 29

The adhesiveness of Water allows it to:

Answer 29

Stick to other molecules because of water’s polarity

Question 30

What is considered the Universal Solvent?

Answer 30

Water, meaning many substances dissolve in water

Question 31

___ and ___ are key processes for the transport of molecules through substrate and across membranes

Answer 31

Diffusion, Osmosis

Question 32

What is Diffusion?

Answer 32

It’s the movement of any substance from areas of high concentration to areas of low concentration

Question 33

One example of Diffusion is:

Answer 33

Perfume because will at first be concentrated in the area it was sprayed. However, over time, the molecules of perfume will spread out until the concentration of perfume molecules is the same in all areas of the room

Question 34

What is Osmosis?

Answer 34

Osmosis is a specific type of diffusion referring to water moving from an area of high concentration to low concentration

Question 35

Water moves ___ across a membrane through pores made of ___ ___

Answer 35

Passively, Aquaporin Proteins

Question 36

___ moves from regions where Solvent Concentrations is high to areas where Solvent Concentrations is low

Answer 36

Water

Question 37

What is one example of Osmosis?

Answer 37

Plants taking in water through their roots. When water is available in soil, Osmosis causes water to flow through the cell walls to the root interior where there is a lower concentration of water

Question 38

To move from regions of low to high Concentrations, ___ must be used

Answer 38

Energy

Question 39

What is Active Transport?

Answer 39

Movement against the concentration gradient that requires energy

Question 40

___ and ___ do not require energy, other than the ___ energy of moving molecules

Answer 40

Diffusion, Osmosis, Kinetic