Introduction to Matter

Question 1

What is the Conservation of Mass?

Answer 1

Mass cannot be created nor destroyed

Question 2

What is an example of the Conservation of Mass

Answer 2

Campfire (Before its wood, after its turned into ash, water vapor, carbon dioxide fumes)

Question 3

What are Physical Properties?

Answer 3

Characteristics that can be observed, without changing into a new substance.

Question 4

What are some examples of Physical Properties?

Answer 4

Color, Conductivity, boiling point, texture

Question 5

What are Chemical Properties?

Answer 5

Ability to change into different substances

Question 6

Name an example of a chemical property

Answer 6

Flammability, oxidation (rust)

Question 7

What is a pure substance?

Answer 7

A single kind of matter that always has a a specific makeup or composition.

Question 8

What is an example of a pure substance?

Answer 8

Oxygen, sugar, hydrogen

Question 9

What is a mixture?

Answer 9

Two or more substances that are together in the same place but are not chemically bonded.

Question 10

What are some examples of mixtures?

Answer 10

chocolate milk, air, coffee

Question 11

Does gravity effect mass?

Answer 11

NO

Question 12

Does gravity effect weight?

Answer 12

YES

Question 13

True or False: Weight depend on location because gravitation pull affects weight

Answer 13

TRUE

Question 14

Do you weigh more on earth or the moon?

Answer 14

Earth

Question 15

Is mass the same on earth or the moon?

Answer 15

BOTH - Mass is constant and doesn’t change

Question 16

How do you calculate DENSITY?

Answer 16

Density = mass/volume

Question 17

The density of water is 1gram/ml. Anything with a greater density will……?

Answer 17

SINK

Question 18

The density of water is 1gram/ml. Anything with a lesser density will…..?

Answer 18

FLOAT

Question 19

What is a physical change?

Answer 19

A change in the form or appearance of matter.

Question 20

What is an example of a physical change?

Answer 20

Crushing a can, chopping wood

Question 21

What is a chemical change?

Answer 21

A change in matter that result in matter that produces one or more new substances.

Question 22

What is an example of a chemical change?

Answer 22

Rust….remember OXIDATION is a chemical property and oxidation causes rust.

Question 23

What is a homogenous mixture?

Answer 23

a mixture where it is difficult or impossible to see the different parts. For example apple juice, soda

Question 24

What is a heterogenous mixture?

Answer 24

Different parts are not chemically bonded and easy to separate? For example a stew. You can easily pick ou the meat and vegetables.