CHEMISTRY 1 exam with questions and answers (100% solved)
1 x 10-4g = ____ mg - ✔✔✔-0.10 ± 0.1
1,261 mL = ____ liters (L) - ✔✔✔-1.26 ± 0.1
4.2 x 108 mm = _____ km - ✔✔✔-420.00 ± 0.1
A golf ball has more mass than a tennis ball because it ____. - ✔✔✔-contains more matter
The following length measurements were taken by students using several different measuring
devices. Find the average of the measurements. Make sure that your answer has the correct
number of significant figures.
10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm - ✔✔✔-Average = (10.05 + 10.1 + 9.741 + 10.6 +
10.5) / 5 = 10.2 cm
What happens to matter during a chemical reaction? - ✔✔✔-Matter is neither destroyed or
created.
What is the volume of 80.0 g of ether if the density of ether is 0.70 g/mL? - ✔✔✔-1.1 x 10^2
What property of matter does not change even though the appearance may change?
mass
area
shape
volume - ✔✔✔-mass
1 x 10-4g = ____ mg - ✔✔✔-0.10 ± 0.1
1,261 mL = ____ liters (L) - ✔✔✔-1.26 ± 0.1
4.2 x 108 mm = _____ km - ✔✔✔-420.00 ± 0.1
A golf ball has more mass than a tennis ball because it ____. - ✔✔✔-contains more matter
The following length measurements were taken by students using several different measuring
devices. Find the average of the measurements. Make sure that your answer has the correct
number of significant figures.
10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm - ✔✔✔-Average = (10.05 + 10.1 + 9.741 + 10.6 +
10.5) / 5 = 10.2 cm
What happens to matter during a chemical reaction? - ✔✔✔-Matter is neither destroyed or
created.
What is the volume of 80.0 g of ether if the density of ether is 0.70 g/mL? - ✔✔✔-1.1 x 10^2
What property of matter does not change even though the appearance may change?
mass
area
shape
volume - ✔✔✔-mass
