A compound differs from a mixture in that a compound always has a?

1. homogeneous composition

2. maximum of two components

3. minimum of three components

4. heterogeneous composition

A chemist must prepare 500. L of 43.0 uM aqueous silver (II) oxide (AgO) working solution. He'll do this by pouring out some 0.000204 M aqueous silver (II) oxide stock solution into a graduated cylinder and diluting it with distilled water.

Examples of colloids?

What happens to the total mass of a substance undergoing a physical change

How would physical changes to Earth such as an iceberg or rising sea levels lead to physical changes in organisms?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity?

Describe 2 theories for yawning

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. the reason for this is?

Where does transcription happen? why is it only in this location?

True or false during decomposition nitrogen gas is changed into nitrogen compounds

Which of the following is a suggested practice to invite families to participate in decision-making and goal-setting for their child? A. Advocacy events B. Take-home backpacks C. Family/teacher conference D. Weekly newsletters