Classify the following as homogeneous or heterogeneous mixtures, or pure we
is a pure substance, whether it is an element or a
Mixture: homogeneous/
Substance
heterogeneous
Pure substanca
element companie
2.1 Sugar
2.2 Magnesium ribbon
2.3 Vegetable soup
2.4 Bath oil
2.5
Tin of assorted biscuits
2.6
Peanuts and raisins
2.7 Copper wire
2.8
Bicarbonate of soda
(Baking soda)​

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?