physical vs chemical change
What is the definition of a chemical change?
What is a substance is transformed into a completely new substance with different properties.
What are the three main states of matter?
What is solids, liquids, gas
Shiny and good conductors of heat and electricity describe…?
What is Metals
A mixture that looks the same throughout is called…?
What is Homogeneous mixture
What are the properties of physical change?
What is no new substances and changes can be reversed
Which state of matter has particles packed tightly in place?
What is solids
Dull, brittle, and poor conductors describe…?
What is nonmetals
A mixture where you can see the different parts is called…?
What is heterogeneous mixture
Tearing paper is what type of change?
What is Physical Change
Which sequence has the states of matter listed from least to greatest kinetic energy?
What is solid → liquid → gas
Name one example of a metal and one example of a nonmetal.
What is Metal: iron, copper, aluminum. Nonmetal: oxygen, sulfur, carbon.
Salt water is an example of what type of mixture?
What is homogeneous mixture
Water freezing into ice is what type of change? Explain why.
What is Physical change – the substance is still H₂O
Anita heats a beaker containing water. As the temperature of the water increases, which change to the water molecules occurs?
What is The molecules move at a faster rate.
Which physical property is important to have in a material used in cookware?
What is good conductor of heat
How would a mixture that is composed of mixed nuts be classified?
What is Heterogeneous mixture
Name one sign that a chemical change has occurred.
What is color change, gas produced, temperature change, new substance formed, light produced
What is the process called when a solid turns directly into a gas?
What is sublimination
Which of the following would make the best insulator against the flow of electricity?
What is plastic tape
What is the difference between a mixture and a compound?
What is Mixtures can be separated physically; compounds are chemically bonded