Which is true about metalloids?

a. are more metallic than non-metallic

b. next to the "staircase" on the periodic table

c. always have 4 e - in the valence shell

d. examples include Al and B

Which statement correctly compares the motion of atoms in liquid mercury and solid copper? Copper atoms in copper move while staying close together, whereas mercury atoms vibrate around fixed positions.

Which of the following increases the average kinetic energy of colliding particles

If an isotope of an element has 18 neutrons and a mass number of 35, how many electrons must it have?

How many liters of a 0.45% half-normal saline (m/v) solution for iv therapy can be prepared from 33 grams of sodium chloride?

What might happen if you got too close to the center of the Milky Way galaxy? AYou would be burned up by the galaxy's brightest stars. incorrect answer BYou would be spun outwards toward the edge of the galaxy.

How to tell the difference between ionic and covalent bonding?

The combustion of propane may be described by the chemical equation C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) How many grams of O2 (g) O2 (g) are needed to completely burn 83.3 g C3H8 (g) ?

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?