significant figures
significant figures
density
physical and chemical changes
measurement
100
How many significant figures does the following number have: 0.002040
4
100
Round 0.010229 to four sig figs
0.01023
100
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
7 g/cm3
14g divided by 2 cm 3 = 7g/cm3
100
Is burning wood a chemical or physical change?
chemical
100
What is the volume of the fish?
6.0 mL
38 mL - 32mL = 6 mL
200
How many significant figures does the following number have: 2001800.
7
200
Round 1009 to three sig figs
1010
200
Which liquid is the least dense?
oil
200
Is glass breaking a chemical or physical change?
Physical
200
What does the scale read?
49.6 g
300
How many significant figures does the following number have: 0.998005
6
300
How many significant figures does 1.90 × 10^8 have?
11
because the answer is 190000000.00 and there are 11 numbers from the left.
300
Which box has a higher density?
Box A
300
What do we call the molecules that are present at the end of a chemical reaction?
Products
300
What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?
4.34 mL
45.6 g of silver divided by 10.5 g/mL = 4.34
400
How many significant figures does the following number have: 100.00210
8
400
Which of the following measurements contains two significant figures?
0.004 00 L
0.004 04 L
0.000 44 L
0.004 40 L
0.000 44 L
400
There are 5 cubic centimeters (cm3). All together they have a mass of 20 g, what is the density?
4 g/cm3
20/5=4
400
What is chemical change?
When two chemicals react with one another to form a new substance
400
What is the quantity 0.0075 meters expressed in centimeters?
0.75 cm