What is difference between groups and periods? 8th grade science idk what to put it under

What is a mineral phase change? a. when a mineral melts from a solid state to a liquid state b. the exterior of a mineral weathers and changes color c. a mineral changes density because of the addition of water d.

What is the principal quantum number value for the highest energy electron in carbon (atomic number 6) ?

In DNA copying, the bonds between the nitrogen bases are broken down by a (n) ?

In an ecosystem, the presence of many different species is critical for the survival of some forms of life when ...

What are some function of magnesium?

If a substance goes from the gas phase to the liquid phase, was it heated or cooled

What kind of movement is produced by each of the three types of seismic waves?

How many ions that have a + 1 charge will bond with an ion that has a - 2 charge?

Which substance is liquid at 0°C? 1. alcohol 2. aluminum 3. ammonia 4. copper

During which phase of the moon do neap tides occur