Ripping up a piece of paper is what type of change
What is physical change?
100
A piece of amber has s density level 1.1 g/mL. Knowing the density of water is 1.0 g/mL, what will happen to the piece of amber when placed in the water?
What is sink?
100
Gold has 79 protons. What is the number of electrons?
What is 79?
100
Ice melting represents a phase change from what to what?
What is solid to liquid?
100
Explain the difference between a compound and a mixture
A compound contains 2 elements that are connected together chemically. A mixture contains 2 or more elements from the periodic table that are NOT connected together chemically.
200
Lighting a match would be what type of change
What is a chemical change?
200
g/mL is the measurement for what
What is density?
200
A core of protons and neutrons surrounded my electrons make up what?
What is an atom?
200
When heat is taken away from something what is happening?
What is freezing or turning into a solid?
200
Lucy was given an unidentified substance in science class. She determined its volume was 5 cubic centimeters (cm^3) and its weight was 30 grams (g). What is the density of this substance?
What is 6 g/cm^3
300
You and your friend had a bonfire in your yard. The wood underwent what type of change.
What is chemical change?
300
Liquids that have are very dense do what when mixed with liquids that are not as dense?
What is sink?
300
aluminum, gold, copper, and carbon. What are all of these?
What is an element?
300
In what state of matter does the arrangement of molecules bounce off each other with lots of room to move.
What is a gas?
300
True or False: When heat is taken away from a substance it starts to melt.
What is false?
400
this type of change produces a new substance.
What is chemical change?
400
Diet soda floats in water and regular soda sinks. What does this say about the regular soda.
What is it is more dense?
400
A container has carbon, oxygen, and helium in it. What is this called?
What is a mixture?
400
Which state of matter will completely fill a container when it's placed in it?
What is a gas?
400
A piece of ice melted in a cup. Which property change the most after it melted: shape, color, volume, mass.
What is shape?
500
This happens when a substance changes its state of matter but does not become a new substance.
What is a physical change?
500
After a 50 gram jar of ice cubes melt, how much does the water weigh after the ice melts?
What is 50 grams.
500
electrons have what kind of charge
What is a negative charge?
500
The two states of matter that change their shapes when they are in different containers
What is a gas and a liquid?
500
Alex crushed a rock with a hammer. What type of change is this?