Chapter 2: Intro to Matter

Vocabulary Terms

100

A measurement of the amount of matter in an object is its __________.

MASS

200

A(n) ________________ is a group of atoms that are joined together by chemical bonds.

MOLECULE

300

A(n) ___________________ is an example of a homogeneous mixture that is very evenly mixed

SOLUTION

400

An object's _______ is its mass divided by its volume.

DENSITY

500

The energy of matter in motion is ________________.

KINETIC

Solutions

100

A mixture that you can clearly see different parts...

HETEROGENEOUS

200

A ________ is made of two or more substances-elements, compounds, or both-that are together in the same place but not chemically combined.

MIXTURE

300

Kool-aid and dissolved sugar water is an example of....

HOMOGENEOUS MIXTURE

400

Soil from a flower pot is an example of a

HETEROGENOUS MIXTURE

500

If I have a solution of salt and water mixed together, what can be done to separate the two?

Heating the solution
(Evaporation)

Density

100

Mass= 130g

Volume = 24mL

Calculate density

D= 5.42g/mL

200

A rectangular prism has the length of 4cm, width of 2cm, and height of 5cm.

What is the volume? Don't forget your units!

40cm³

300

mass= 1,200g

Volume = 425cm³

^{Calculate density}

D= 2.82g/cm³

400

Density= 4.8g/cm³

Volume = 42cm³

Calculate MASS

Mass= 201.5g

500

Density = 402g/mL

Mass= 80.5g

Volume= 0.2mL

Physical & Chemical Changes

100

Chopping wood is an example of _________change.

PHYSICAL

200

Burning fuel is an example of a _________ change.

CHEMICAL CHANGE

300

You leave your bike outside.  It starts to rust.  This is an example of ___________ change.

CHEMICAL CHANGE

400

Frying an egg on a skillet is an example of a _________________ change.

CHEMICAL

500

Chewing food is an example of _______.

Swallowing and digesting your food is an example of _______________.

physical change, chemical change

Random

100

A cubic centimeter (cm³) is the unit for measuring _________.

VOLUME

200

the unit grams (g) is normally used for measuring ______

MASS

300

Every chemical or physical change in matter includes a change in ________.

energy

400

The unit for density is

g/cm³       or        g/mL

(kg accepted too)

500

Suppose you have a toy rubber ducky.  What method could you use to find the volume?

VOLUME BY DISPLACEMENT