En. Chem unit 1 test review

What is an independent variable?

• the variable that I change in the experiment

• the variable that doesn't matter

• the variable that changes naturally

• the variable that doesn't change

The scientific method is

• Experimentation

• A hypothesis

• A process of scientific experimentation

• A process that is used to predict science

A hypothesis is...

• an idea that is not proven yet

• a proven idea that needs further explanation

• a recording of observations

• scientific data collecting

A chemical Property...

• describes how matter can change into a new substance

• is like when iron rusts

• when matter reacts to something

• All of the above

A physical property

• is the simplest form of property

• can be observed WITHOUT a change in matter

• is like when a matter is able to combust

• All of the above

H2 and O2 becoming H2O is an example of

• a chemical change

• a physical change

• both a chemical and physical change

An element is

• made up of different atoms

• can be broken down

• the simplest form of matter

• a mixture

"More than one kind of element connected by bonds" is

• a compound

• matter

• a mixture

• a substance

Quantitative data

• is a measurement of something in numbers

• measures how many, how much, how often

• is like "300ml of water"

• All of the above

Qualitative data

• has numbers used as measurements

• none of the above

• measures how many, how much, how often

• measures 'types' like a description and detailed information