Q: When we move down a group of elements on the periodic table, what happens to their electronegativity? Choices: - it increases - it stays the same - it doubles - it decreases A:
it decreases

Q: What type of substance is any matter that has a fixed chemical composition and characteristic properties? Choices: - physical substance - versatile chemical substance - seawater chemical substance - pure chemical substance A:
pure chemical substance

Q: Which two states of matter have definite volumes? Choices: - bacteria and liquids - GAS AND LIQUIDS - contrasts and liquids - solids and liquids A:
solids and liquids