Give the chemical symbol of an element in the third period (row) of the periodic table with three valence electrons. Express your answer as a chemical symbol

Which of the following would be expected to form ionic solutions in water? CO2 C NaI CCl4 O2

Water on the stovetop is boiling and evaporating. chemical or physical

Which of the following relationships correctly depict the relationship between pressure and volume for a fixed amount of gas at constant temperature according to Boyle's law. 1. PV∝V 2. P∝V 3. V∝1P 4. P∝1V 5. PV∝P 6. V∝P

Which of the following is NOT a step in the operation of a Geiger counter? Choose one answer. A) Nuclear radiation ionizes gas in a tube. B) Ionized gas produces an electric current. C) Magnets cause the ions to conduct electricity.

How many hydrogen atoms are in water, H2O? A) 1 B) 2 C) 3 D) 0

Heat that flows by conduction is the transter of thermal energy between substances in contact. What must occur for this to happen? The two systems must be the same temperature, The two systems must not be touching each another.

What piece of information connects mass and moles?

What relationship can be seen in an element's placement within a group and its electron configuration?

Which of the following is true concerning atoms? A. Atoms are made of even smaller substances called subatomic particles B. The properties of atoms cannot be measured or observed

Intermolecular forces as a whole are also known as