When a scientist has an idea that has not been proven, what is it called?
hypothesis
100
If you drop a glass cup and it smashes on the ground- is this a physical or chemical change?
physical
100
One of these is not matter:dust, air, steam, gravity
gravity
200
What is volume?
The amount of space occupied by an object
200
What are some units that liquid volume is measured with?
milliliters, liters, ounces
200
when you use only your senses to get information about something and do not suggest what it is or what is happening, what skill are you using?
observation
200
List 3 physical properties of water?
colorless, liquid at room temp, density of 1g/ml, odorless, can dissolve sugar and salt.
200
Why is light, love and electricity and magnetic force not matter?
they are energy, emotions and forces- not matter
300
What is weight?
A measure of the gravitational force exerted on the object.
300
What is the name of the kind of scale you use to measure mass?
triple beam balance
300
I see a student standing in the hallway by himself and he looks very unhappy. I think that he is a person who would like a friend to talk to...
what scientific process are you using to make this conclusion?
inference
300
How do you know if you are looking at a chemical change?
fizzing, foaming, bubbling, sound, light, heat
300
What is the name of the most famous table in the world?
periodic table
400
What is mass?
The amount of matter something has.
400
You are in your bathroom weighing yourself. What kind of scale are you using: a balance or spring scale?
spring scale
400
Scientists must share their information. Why do they have to share their data in order for ideas to be proven?
science needs to be repeatable, scientists improve each others ideas, new information often replaces older ideas...
400
Are the following properties chemical or physical?: flammability, reacts with vinegar, turns black when you add iodine?
chemical
400
what is an atom
It is the smallest unit that matter can be to have an identity
500
How does mass and distance affect gravity?
Gravitational force is larger between objects that are close together and smaller between objects that are farther apart.
500
How do you measure density?
Density is an objects mass divided by volume
500
What could cause discrepant data or experimental errors?
mismeasuring, lack of control, mislabeling
500
There is a big heavy box on the ground, you try to pick it up but you cannot lift it. Use the term "inertia" to explain why.
When inertia is large, there is more mass. Inertia is the tendency of all objects to resist change in motion
500
What does atomic number and atomic mass measure. Be specific.
atomic number is the number of protons, electrons of an element. atomic mass is protons plus neutrons