Question 1 Which of the following properties uniquely identifies every element?

Number of valence electrons

Phase at room temperature

Number of protons

Charge of the atom

Which best describes why nh4+ can form an ionic bond with ci-?

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon