Chemistry

Dalton's atomic model laid the foundation for what? Mention twa limitations of Dalton's atomic model.

5. SEP Construct Explanations What is the difference between a molecule and a compound?

What Did You Figure Out? Five New Things Record five new ideas about the periodic table that you did not know before this lesson.

Being able to describe the change in energy is useful so we have the terms endothermic and exothermic. Identify the exothermic and endothermic situations (slide 11612) Es útil poder describir el cambio de energia,por lo que tenemos los términos endotérmico y exotérmico. Identificar las situaciones exotémica y endotérmica. cooking a cake square activating a hand warmer (see square image) using a battery (running the battery) square v boiling water square

All chemicals in the lab are to be considered dangerous. True False

Which of these is an example of an element mentioned in the video? Table salt Glucose Oxygen Water

9. Explain the relationship between a) the size of a positive ion and its atom b) the size of a negative ion and its atom

Fill in the Blank Question Liquid water is square than ice between 0^circ C and 4^circ C Need help? Review these concept resources. (3) Read About the Concept

Compared to air,argon gas is __ Lighter More toxic Less toxic Heavier

A. In the the seven blanks. Onese the connect word for each definition, Each word is used only once. square one or two letters that represent an element. square :a substance that consists of only one type of atom. square - :a group of chemical symbols and numbers that represent the elaments and the number of atoms of each element that make up ecorpound square : a small particle that is the building block of matter. square Eachart of the elements arranged into rows and columns according to their physical and chemical properties.