Flashcardziz - QA2 PES & MM (units 1 and 2) 24-25

Front

What happens when oil and vinegar are stirred together?

Back

They separate into layers because their molecules are not attracted to each other.

Front

What causes oil and vinegar to mix when egg is added?

Back

They combine together because they both attract to the egg molecules.

Front

How does Earth move from January 1st to July 1st?

Back

Earth makes half a revolution around the Sun.

Front

Why do balsamic vinegar and olive oil separate when stirred?

Back

They separate because their molecules are not attracted to each other.

Front

What happens when lecithin is added to balsamic vinegar and olive oil?

Back

They combine together because they both attract to the lecithin molecules.

Front

Is the model of oil, vinegar, and egg molecules accurate?

Back

No, it is not accurate because it shows oil and vinegar molecules attracted to each other.

Front

What does the weight of matter do during physical and chemical reactions?

Back

The weight of matter stays the same.

Front

What is an example of a physical reaction?

Back

Mixing oil and vinegar.

Front

What is an example of a chemical reaction?

Back

Burning wood.

Front

What is the definition of a molecule?

Back

A molecule is a group of atoms bonded together.