What is the difference between a compound and a mixture? Group of answer choices

A compound is just a mixture of elements.

A mixture can be physically separated into its components; a compound cannot be physically separated into its components.

The components of a mixture do not have the same properties individually as they do when mixed.

A compound can be physically separated into its components; a mixture cannot be physically separated into its components.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?