Chemical Change
This change in appearance, like rust forming on metal, may show a chemical reaction has happened.
Color Change
What would have to be true for an item to float on water?
It's density must be less than 1 (density of water)
If two forces of 5 N and 3 N act in the same direction on an object, the net force is this.
8N
These elements are good conductors of heat and electricity and are usually shiny.
Metals
This state of matter has a definite shape and volume.
Solid
Bubbling or fizzing may be a sign of this being produced during a chemical change
Gas
If water's density is 1.0 g/cm3 and I place an item that has a density of 1.35g/cm3. Will it sink or float? Why?
Sink, Its density is greater than the water's density
When forces act in opposite directions, you find the net force by doing this
Subtracting the smaller forces from the larger force
This group of elements is usually dull, brittle, and poor conductors of heat and electricity.
Nonmetals
This state of matter has a definite volume but no definite shape.
Liquid
This happens when two liquids form a solid during a chemical reaction.
Precipitate
What is the formula to calculate density?
Density= Mass/ Volume
If two forces of 6 N and 6 N act in opposite directions, the net force is this.
0N, Balanced force
These elements have properties of both metals and nonmetals, often known as semiconductors.
Metalloids
This state of matter has no definite shape or volume and fills its container.
Gas
Name three signs that a chemical change has occurred.
Gas production, precipitate, color change, thermal energy change, odor change
6.56/23
This type of force results when all forces acting on an object are balanced
Balanced Force (zero net force)
Most metals are found on this side of the periodic table.
Left side
This type of mixture has parts that you can see, like a salad.
Heterogeneous Mixtures
When a candle burns, what type of chemical change is occurring?
An item has a volume of 54cm3 and a mass of 43g. How would you set up the equation to solve for density?
43/54
Two teams pull on a rope in a tug-of-war with equal force. The rope does this.
Doesn't move (stays still)
This is the property that allows metals to be hammered or bent without breaking.
Malleability
This type of mixture is the same throughout, like salt dissolved in water.
Homogeneous Mixtures