Density & Physical/Chemical Changes
Meniscus
The curve at a liquid's surface by which one measures the volume of the liquid
Object A has a density of 0.8 g/cm3 and Object B has a density of 1.5 g/cm3. What will happen when the objects are put into water?
The water level will rise.
What is the measure of the amount of a space a substance occupies?
Volume
How do liquids form layers in a container?
When oil and water are mixed together.
List if its physical or chemical in Column B Column A Column B Ripping a piece of paper Burning a candle Iron nail rusting Mixing baking soda and water
Physical Chemical Chemical Physical
What is the density of a liquid water?
1 g/ml3
If a cube has a mass of 320 g and a volume of 64 cm 3. What is the density?
5 g/cm3
Physical Change
A change of matter from one form to another without a change in chemical properties.
Chemical Change
A change that occurs when one or more substances change into entirely new substances with different properties.
Physical Property
A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness.
Mass
A measure of the amount of matter in an object.
Weight
A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
Volume
A measure of the size of a body or region in three-dimensional space
Chemical Property
A property of matter that describes a substance's ability to participate in chemical reactions.
Density
A ratio of the mass of a substance to the volume of the substance.
What two piece of lab equipment are used to measure volume?
A ruler and a graduated cylinder
Matter
Anything that has mass and takes up space
Give 3 signs of a chemical change?
Change in temperature and color, and a production of an odor
How do you measure the volume of an irregular shaped object (i.e. marble, penny)
Put the object in a measured amount of water and measure how much the water rises on a graduated cylinder. The difference is the volume of the object.
Which unit is used when measuring volume?
Cubic Meter
How do you find mass?
Denisty times Volume
How do you find volume?
Mass divided by volume
Is a change of phase a chemical or physical change?
Physical
What does the property, ductility allow a substance to do?
can be drawn into threads or wires or hammered into thin sheets
What does the property, malleability allow a substance to do?
can be rolled into something
What units are used to represent density of a solid?
g/cm3
What units are used to represent density of a liquid?
g/ml3
What is the formula for density?
mass divided by volume
What piece of equipment is used to measure mass? in what units?
three beam balance in grams
