Classifying Matter
What is a homogenous mixture?
Is cutting a plank of wood in half a physical or chemical change?
What is a physical change?
What is the name of the phase change from solid to liquid?
What is melting?
What are the three particles that make up an atom?
What are protons, neutrons and electrons?
What is one chemical reaction that is common in everyday life?
What is digestion, photosynthesis, rust, fire, etc?
Is mass a physical or chemical property?
What is a physical property?
Is fire a physical or chemical change?
What is a chemical change?
What is the name of the phase change from gas to solid?
What is deposition?
Which of the three particles that make up an atom are located in the nucleus (the center)?
What are protons and neutrons?
Which side of the reactant arrow are the reactants on (left or right)?
What is the left side?
Reactants --> Products
What are the two types of matter that are pure substances?
What are elements and compounds?
In the lab, when you put sugar on the hot plate, was that a physical or chemical change? Why?
What is a chemical change because the color and smell both changed?
If particles are spread out and then they come together and start touching, but remain unorganized, what phase change has occurred?
If an atom has 10 protons, how many electrons must it have?
What is 10 electrons?
What happens to atoms and molecules during chemical reactions?
What is the molecules and atoms are rearranged?
Provide an example for an element, a compound, a homogenous mixture and a heterogenous mixture.
What are gold, water, honey and salsa?
What are two indicators of physical changes?
What are change in size, change in shape, phase changes, mixing, etc. ?
Explain how the particles are arranged in a solid, a liquid and a gas.
What are solids are touching and organized, liquids are touching and unorganized, and gases are spread out?
How many carbons and hydrogens are in: 2C3H6
What are 6 carbons and 12 hydrogens?
What does the law conservation of matter state?
Name 3 chemical properties.
What are flammability, acidity, and reactivity?
What are the 5 indicators of chemical change?
What are:
1) change in color
2) change in smell
3) production of gas
4) heat/cold that was not applied
5) light/heat/burning
What are the three phase changes that go from more structured to less structured?
How do compounds form (be specific)?
What is through interactions between the electrons of two atoms that chemical bond them together?
Is this equation balanced?
2H2 + O2 --> H2O
What is no?