Chapter 7 - Introduction to Matter

Which *TWO* are true of all matter?

• Has mass

• Is solid

• Takes up space

• Can be destroyed

Which of these is true of all substances?

• They can be homogeneous or heterogeneous

• They always have a specific makeup or composition

• All substances are elements

• Their makeup can change

___ is the study of matter and how matter changes.

• Science

• Physics

• Biology

• Chemistry

Which of these is NOT true of physical properties?

• They can be used to describe matter

• They can be observed without changing a substance into something else

• Color is an example

• They describe a substance's ability to change into another substance

Choose the physical properties.

• Boils at 100° C

• Cold

• Smooth

• Able to rust

• Flammable

Choose the chemical properties.

• Electrical conductivity

• Inability to burn

• Freezing point of 0° C

• Ability to burn

• Ability to rust

What is the best way to explaining why flammability is a chemical property?

• Objects look different before and after they burn

• Objects burn at different temperatures

• When an object burns, new substances are produced

• Flames are orange

Which is the simplest kind of substance?

• Compound

• Molecule

• Element

• Mixture

Which is NOT true of elements?

• They are made of one kind of atom

• There are more than 100 of them

• Water is an example

• They cannot be broken down into any other substances

Choose the elements.

• Water

• Oxygen

• Carbon

• Carbon Dioxide

• Gold