January 29, 2015

Homework Help: Science

Posted by SpiersTheAmazingHd on Tuesday, March 26, 2013 at 5:25pm.

7. Which of the following changes gives no evidence that a chemical reaction has taken place?

A cube of solid forms a puddle of liquid.
A certain liquid is added to a solid, and bubbles of gas form.
Two liquids are mixed, and a precipitate forms.
Heating a blue solid turns the solid white.

9. Which of the following represents a compound?

Answer this Question

First Name:
School Subject:

Related Questions

science - 5.00 lb of mercury is spilled onto a counter and forms a circular ...
science - Explaini why the observation if a preciiitate forming may be evidence ...
science - 1. The ability of an apple to change color when exposed to air is a ...
chemistry - As the temperature of a gaseous substance is decreased at constant ...
Science - What occurs when a substance melts? 1) It changes from solid to liquid...
science - when a liquid wax is turned into a solid is it a chemical reaction?
science - A test liquid has a density of 1.1 g/ml. When you pour some of it into...
7th grade Science - 1. The atmosphere of Earth is an example of a ______solution...
Science Help! - A student mixed two clear liquids together in a beaker. A solid ...
Science - Liquid A=0.68 g/ml Liquid B=0.76 g/ml Liquid C=1.00 g/ml Liquid D=1.08...