1) What is the symbol for Titanium? a) Ti b) Mg c) Tn d) Tm 2) Which is a common use of Magnesium? a) Fireworks b) in Chlorophyll c) Batteries d) Glass 3) Which property is true for Titanium? a) Corrosion resistant (no rust) b) Highly reactive c) Brittle d) Non-metal 4) What is the symbol for Magnesium? a) Mg b) Ti c) Mn d) Ma 5) Which industry uses Titanium ? a) Aerospace b) Textile c) Food d) Agriculture 6) Which is a property of Magnesium? a) Lightweight b) Heavy c) Brittle d) Non-metal 7) What is a common use of Titanium? a) Medical implants b) Cars body c) Textiles d) Fuel 8) Which element is essential for plant growth (chlorophyll) ? a) Magnesium b) Titanium c) Gold d) Silver 9) Which element is used in aircraft construction? a) Titanium b) Magnesium c) Lead d) Zinc 10) Which is a property of Titanium? a) High strength b) Low density c) Brittle d) Non-metal 11) What is the chemical formula for table salt? a) NaCl b) KCl c) CaCl2 d) MgCl2 12) What is an element? a) Pure substance b) Mixture of gases c) Combination of atoms d) Chemical reaction 13) What is a compound? a) Single atom b) Mixture of elements c) Two or more elements bonded together d) Physical change 14) Which is a compound? a) Oxygen b) Water c) Gold d) Iron 15) Which is an element? a) Carbon dioxide b) Salt c) titanium d) Sugar 16) Elements are made of? a) Atoms b) Molecules c) Compounds d) Mixtures 17) Compounds are made of? a) Atoms b) Elements c) Mixtures d) Solutions 18) Example of an element? a) Methane b) Oxygen c) Water d) Carbon monoxide 19) Elements are represented by? a) Chemical symbols b) Chemical formulas c) Equations d) Reactions 20) Which is not a compound? a) H2O b) CO2 c) Na d) NaCl 21) How are compounds formed? a) Mixing elements b) Chemical reactions (bonds) c) Physical changes d) Heating elements 22) Which is a mixture? a) Air b) Water c) Salt d) Carbon 23) Which is a pure substance? a) Air b) Gold c) Sand d) Soil

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