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WorksheetsTest Review
Total questions: 10
Worksheet time: 3hrs 30mins
How many hydrogen atoms are in one molecule of camphor?
C10H16O
10
16
26
27
Two students complete a lab using two unknown substances in a chemical reaction. Which sign is NOT an indication of a chemical reaction?
Shape Change
Bubbles
Temperature change
Odor change
Potassium hydroxide, KOH, reacts with hydrochloric acid, HCl3, to form a salt and water?
KOH + HCl --> KCl+ H2O
25.0 g + ?g --> 33.22g + 8.02
16.24
17.5
15.3
20.2
A student measures the mass and volume of four rocks. According to the data, which rock is most dense?
Rock 1
Rock 2
Rock 3
Rock 4
Which statement correctly places elements in order of least to greatest reactivity?
Arsenic, gallium, potassium, krypton
Potassium, gallium, arsenic, krypton
Krypton, arsenic, gallium, potassium
Krypton, potassium, gallium, arsenic
A scientist determines an unknown metallic sample to have 77 protons and 77 electrons with a mass number of 192. How many neutrons does one metal atom contain?
115
77
110
80
Dissolving sugar in water is an example of what type of change?
Digestive change
Physical change
Chemical change
Physical and chemical change
The following information is provided about an element in the periodic table. Which element is best described by the information in the table?
Helium (He)
Strontium (Sr)
Tin (Sn)
Radium (Ra)
Students conduct an investigation to classify different substances as metals or nonmetals. They record observations in the table. According to the table, which substances are NOT metals?
Sulfur, Carbon, Iron
Carbon, Aluminum, Graphite
Carbon, Sulfur, Graphite
Iron, Aluminum, Graphite
Which location represents metalloids?
1
2
3
4
