Properties Of Matter

Question 1

What is plasma?

Answer 1

A “soup” of positive Nuclei surrounded by free flowing electrons , the particles have broken down and become ionized.
Ex:lightning

Question 2

What is a liquid?

Answer 2

NO definite shape, definite volume, The particles can slide past each other, but are still packed together, the atoms/molecules can move and flow to fit a container.

More kinetic energy in the molecules
Ex:water

Question 3

What is a gas?

Answer 3

No definite shape and volume
Most kinetic energy of the molecules. The particles are in constant motion and rarely stick together, the atoms/molecules can move and flow to fit a container.

Ex:air

Question 3

Are liquid molecules packed together?

Answer 3

• more space than solid
• more space between molecules
• not packed tightly

Question 4

What is a solid?

Answer 4

Definite shape and volume. The particles are in a rigid, fixed structure, the atoms/molecules DO NOT MOVE to fill a structure.

Ex:aluminum, anything solid really

Question 5

Are solid molecules far out?

Answer 5

Molecules packed close together

Question 6

Are gas molecules kind-of close together?

Answer 6

Roam er’y where bruh, gas molecules be crazy

Question 7

Define Physical Change.

Answer 7

A change in matter that DOES NOT produce new materials, are “easily” reversed, can be reversed by a physical change.

Question 8

Define a Change of State.

Answer 8

Melting/Freezing, evaporation/condensation, when materials boil, the atoms become more disordered, when materials freeze, the atoms become more ordered, the total mass remains the same during a state of change.

Question 9

What is an example of Physical Change?

Answer 9

Melting butter, dissolving salt into water, ice melting, pounding gold into a coin, a puddle of water evaporating, crushing chalk into dust. (SAME THING, just in a different form, nothing new is created)

Question 10

Define Chemical Change.

Answer 10

A change in matter that DOES produce new materials, not “easily” reversed, can only be reversed by a chemical change, a chemical change occurs when a NEW product is formed.

Question 11

What are some examples of Chemical Change?

Answer 11

Burning paper, rusting iorn, burning gasolline, hard-boiling an egg, burning wood into charcoal, paint fading, plants using CO2 and H2O to form O2 and sugar, frying and egg, fruit rotting, baking a cake.

Question 12

Define: Mixture

Answer 12

Two or more substances physically combined, or real close together.

Question 13

Do the substances in a mixture change their properties?

Answer 13

No, the substances in a mixture keep their indivisual properties.

Question 14

FILL IN THE BLANK:

Mixtures can be separated into____________ of the mixture by ________ changes.

Answer 14

Mixtures can be separated into INDIVIDUAL PARTS of the mixture by PHYSICAL changes.

Question 15

Heterogeneous

Answer 15

A mixture that is NOT the same throughout.

Question 16

Homogeneous

Answer 16

A mixture that is the same throughout, or is mixed so well its looks like one substance.

Question 17

The Law of Conservation of Matter

Answer 17

In any chemical reaction, atoms are not created or destroyed, they just arrange to new products.

Question 18

What does the The Law of Conservation of Matter say about physical change?

Answer 18

In a physical change, like melting ice, the total mass before melting will be equal to the total mass after melting.

Question 19

What does The Law of Conservation of Matter say about chemical change?

Answer 19

Even if paper is burned, the total mass before burning will be equal to the total mass after burning because gasses like smoke and CO2 have mass

Question 20

Signs of a Chemical Reaction:

Answer 20

> New products from with new properties
> Gas formation
>  Color Change
> Odor produced
> Solid precipitate forms
> A transfer, or release of enrgy

Question 21

Reactants are on which side of the arrow

Answer 21

Left (Chemical reaction)

Question 22

The Arrow(—>) means

Answer 22

“Yields”

Question 23

Exothermic

Answer 23

A type of (chemical) reaction that produces an increase in temperature, ex: burning paper

Question 24

Endothermic

Answer 24

A chemical reaction that absorbs heat from the surrounding environment (Ex: plastic becoming brittle after being left in the sun)

Question 25

Synthesis Formula

Answer 25

A+B=AB

Question 26

Decomposition reaction

Answer 26

AB —-> A+B

Question 27

Single Replacement Reaction

Answer 27

A+BC—-> AC +B

Question 28

Double Replacement Reaction

Answer 28

AB+CD—–> AD+CB

Question 29

Balanced Equation

Answer 29

Same number of, and types of atoms on both sides of the arrow

Question 30

Define the Synthesis Formula

Answer 30

Combining of several simple substances, to create complex substences.

Question 31

Define the Single Composition Formula

Answer 31

A “free” element can take the place of another element in a compound.

Question 32

Define the Decomposition Formula

Answer 32

Breaking down a compound into simpler substances.

Question 33

Define the Double Replacement Formula

Answer 33

Part of the first compound changes place of the other compund.
*ALWAYS TAKES PLACE BETWEEN TWO COMPOUNDS!!!!! :)

Question 34

Amen

Answer 34

Let it be so, because im done :) XD :3