A student described two properties of a substance as shown.

Properties of Substance
Property Description
A The substance can be hammered into a flat sheet.
B The density of the substance is one-third of the density of iron.

Which of the following statements is true about the two properties described in the table? (5 points)
Both are physical properties.
Both are chemical properties.
A is a chemical property and B is a physical property.
A is a physical property and B is a chemical property.

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.