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WorksheetsIntro to Chemistry
Total questions: 10
Worksheet time: 5mins
The following are scientific methods of experiments, except:
Making observations
Making survey
Formulating hypothesis
Performing experiments
Ice always floats on liquid water, this statement is a:
Quantitative observation
Law
hypothesis
theory
Gas mixtures that contain more than 4% hydrogen in air are potentially explosive, this statement is a:
Quantitative observation
Qualitative observation
hypothesis
theory
The universe was formed by a massive explosion that propelled matter into a vacuum. This statement is a:
hypothesis
Theory
Law
Qualitative observation
Freshly squeezed orange juice, classify if:
Homogeneous mixture
Heterogeneous mixture
Compound
Elements
A compact disc is an example of:
compound
element
Homogeneous mixture
Heterogeneous mixture
Milk is an example of:
Heterogeneous mixture
Homogeneous mixture
Compound
Elements
Convert 8.43 cm to millimeters
8.43 x10^2 mm
84.30 mm
0.843 mm
843 mm
The mass of the sample is 550mg, which of the following expresses that mass in kg?
5.5 x 10^8 kg
5.5 x 10^5 kg
5.5 x 10^-4 kg
5.5 x 10^-6 kg
Calculate the density in g/mL of 30 mL of solution that weighs 120 grams.
0.25 g/mL
4.0 g/mL
3.6 x 10^2 g/mL
3.6 x 10 g/mL
