Which one of this techniques helps scientists to solve problems?

Chemistry chapter 2

Quiz
•
Chemistry
•
1st - 5th Grade
•
Hard
Myrka Oliva
Used 2+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Use every data even though it is not related.
Don't analize, just solve by instinct.
Identify the known facts.
Get a quickly solution.
2.
MULTIPLE SELECT QUESTION
5 sec • 1 pt
What is SI fundamental unit of mass?
meter (m)
kilogram (kg)
second (s)
pounds (lb)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
List the number of significant digits og the following exercise: 5.029
1 significant digit
2 significant digit
3 significant digit
4 significant digit
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for density?
density = mass x volume
density = mass / volume
density = mass + volume
density = mass - volume
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
8 g/cm3
2 g/cm3
2 kg/cm3
24 g/cm3
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why do some substances float on water?
they are warmer than water
they are cooler than water
they are more dense than water
they are less dense than water
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Helium balloons rise on earth because
helium is less dense than air
helium is more dense than air
helium is cooler than air
helium is warmer than air
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