Ch 1 - matter and change

Question 1

What is a particular type of matter that has uniform and definite composition?

Answer 1

substance

Question 2

What is a means of testing a hypothesis?

Answer 2

experiment

Question 3

What is a quality or condition of a substances’ composition?

Answer 3

physical property

Question 4

What is matter with a definite shape and volume?

Answer 4

solid

Question 5

What is an approach to a solution of scientific problem?

Answer 5

scientific method

Question 6

What is matter that flows and has a definite volume but NOT a definite shape?

Answer 6

liquid

Question 7

What is matter that takes the shape and volume of the container?

Answer 7

gas

Question 8

What is another name for a homogeneous mixture?

Answer 8

solution

Question 9

What is a mixture that looks the same through out?

Answer 9

homogeneous

Question 10

What is a combination of 2 or more chemicals that can NOT be broken down by physical means?

Answer 10

Chemical properties

Question 11

What is the study of substances and the changes they under go?

Answer 11

chemistry

Question 12

What are the building blocks of matter?

Answer 12

elements

Question 13

What is the chemistry that studies all substances WITHOUT carbon?

Answer 13

inorganic

Question 14

What is anything that has mass and takes up space?

Answer 14

matter

Question 15

What is the chemistry that studies the composition of substances?

Answer 15

analytical

Question 16

What describes a substance that although in a gaseous state, is typically a liquid or solid at room temperature?

Answer 16

vapor

Question 17

What process is where a liquid is boiled, turns into a vapor, then is condensed back into a liquid?

Answer 17

distillation

Question 18

What is used to represent elements?

Answer 18

chemical symbols

Question 19

What are the STARTING substances of a reaction?

Answer 19

reactant

Question 20

What states that IN a chemical or physical reaction - matter can NOT be created or destroyed - but is conserved?

Answer 20

Law of Conservation of Mass

Question 21

Give some examples of a physical change?

Answer 21

cutting and grinding
boiling or condensing
freezing and melting

Question 22

When does a chemical change occur to a piece of wood?

Answer 22

when is decays

Question 23

What is the chemical symbol for sulfur?

Answer 23

S

Question 24

What happens when iron and oxygen combine to form iron oxide (rust)?

Answer 24

a chemical change occurs

Question 25

What kind of matter is gas?

Answer 25

gas takes the shape and volume of a container

Question 26

Which is a compound: | carbon, hydrogen or water?

Answer 26

water

Question 27

Which of the following is an extensive property: | color, mass, softness, hardness?

Answer 27

mass

Question 28

Be able to state if the following is a Heterogeneous mixture, homogeneous mixture, compound or element? ``` vegetable soup tap water apple juice granite salt hydrogen hydrogen peroxide ```

Answer 28

``` vegetable soup - - heterogeneous mixture tap water - - homogeneous mixture apple juice - - homogeneous mixture granite - - heterogeneous mixture salt - - compound hydrogen - - element hydrogen peroxide - - compound ```

Question 29

Be able to state if a physical or chemical change has occurred: digesting food burning matches rotting meat dissolving salt

Answer 29

digesting food - - chemical change burning matches - - chemical change rotting meat - - chemical change dissolving salt - - physical change

Question 30

How can you separate iron filings and sand?

Answer 30

Use a magnet to pull out the iron filings

Question 31

How can you separate alcohol and water?

Answer 31

use distillation and condensation

Question 32

What are the 4 signs of a chemical reaction has occurred?

Answer 32

1. A Gas forms 2. Change of Color 3. Change in Temperature 4. Forms a percipitate

Question 33

Know the MATTER CHART

Answer 33

See Mrs. Krumpelman