Lithium and potassium have similar chemical properties because the atoms of both elements have the same

(1) mass number

(2) atomic number

(3) number of electron shells

(4) number of valence electrons

Paleomagnetic evidence was used to confirm which of the following hypotheses? a. hot spot b. transformation boundaries c. seafloor spreading d. subduction

A sample of lead has a mass of 150.0 g what amount of lead in moles does the sample contain

Which compound has the strongest hydrogen bonding at STP? 1. H2O 2. H2S 3. H2Se 4. H2Te

There are 2.5 cm in an inch. If a paperclip is 1.5 in long, how many centimeters long is the paperclip?

Round the following answer correctly. 5.40m x 3.21m x 1.871m = 32.431914 m^3

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