CFA/ Quiz 2 (Unit 1)

By Lori-Ann Thomas

Last updated over 1 year ago

4 Questions

Note from the author:

Classifying matter and the effects of thermal energy

Instructions

A teacher slowly stirs 40 grams (g) of table salt (NaCl) into a 100 milliliter (mL) beaker of water (H2O). The beaker is heated on a hot plate until it boils.

Required

What type of matter are the salt (NaCl) and the water (H2O)? (select all that apply: Limit 2 )

Required

As the teacher stirs the Table salt (NaCl) into the beaker of water, the beaker is heated on a hot plate until it boils. Describe the change in the water molecules as thermal energy is added. (Write your explanation using complete sentences.)

Required

Select the best answer that models the resulting liquid when salt is added to the water and stirred. (Select all that apply: Limit 2)

Required

The models below show different kinds of matter. Match each model to its corresponding identity.

		Mixture of Elements
		Elements
		Compounds
		Mixture of elements and compounds
		Mixture of compounds