Burning a piece of paper is an example of a _______ because...
Chemical change because new materials were formed.
100
Mass is measured in...
grams
100
Find the volume of this shape:
length: 1 cm
width: 3 cm
height: 5 cm
15 cm3
100
What is density measured in?
g/units cubed (for example, g/cm3)
200
In this state of matter, molecules are very tightly packed
Solid
200
What is a chemical change?
In a chemical change, a new material is formed.
200
What do you use to measure mass?
Balance scale
200
What is the formula used to find volume?
length x width x height
200
Given that the mass is 10g and the volume is 5 cm3, what is the density?
Density = 10g/5cm3 = 2 g/cm3
300
The state of matter where molecules are not right beside each other, but not really far apart. This state of matter has a definite volume but not a definite shape.
Liquid
300
What is a physical change?
It is essentially reversible, nothing new is formed, you're changing one physical aspect of an object (size, shape)
300
What are the steps you should take to mass an object?
First, place object on scale.
Next, start with 100g, move to 10g, then to 1.
Last, make sure scale is balanced.
300
When measuring the volume of solids, use this to label...
units cubed (for example, cubic centimeters)
300
What is the formula for density?
density = mass/volume
400
The state of matter where molecules are very far apart...
Gas
400
Give an example of physical change.
(answers vary - cutting our superchain)
400
Does a smaller object always have less mass than a larger object? Explain.
No! A larger object could be hollow, a smaller object could be made of a material with more mass.
400
When measuring the volume of liquids, use this to label...
ml
400
Is a small object always less dense than a large object?
No! It depends on the mass and volume and the mass of a small object is not always less than that of a large object.
500
What do you need to change from one state of matter to another?
Energy (heat)
500
Give an example of chemical change.
(answers vary - burning our superchain)
500
Explain the difference between mass and weight.
Mass is a constant measurement, and tells how much matter something is made up of. Weight depends on the pull of gravity.
500
What does volume measure?
How much an object can hold or how much space an object takes up.
500
What does density measure?
The amount of mass in a given volume or the closeness of molecules.