1) In which of the following matter do all particles are uniformly distributed? a) cotton candy in a jar b) mayonnaise in a jar c) popcorn in a papercup d) softdrinks in a close bottle 2) What is the best way to separate oil and water? a) decantation b) filtration c) sieving d) physical manipulation 3) What is the first step in Scientific Method? a) Formulatte hypothesis b) Identifying the problem c) Analyzing the result d) Writing a conclusion 4) Which of the following instrument is used to measure volume of a liquid? a) beaker b) thermometer c) spring scale d) rain gauge 5) Which of the following is not soluble in water? a) oil b) sugar c) salt d) vinegar 6) Why should medicine prepared as suspension be shaken well before use? a) to mix in the powder that have settled at the bottom b) to make sure the flavors are mixed for a better taste c) to make suspension turn into a colloid d) to make suspension turn into a solution 7) To get the salt out of seawater, it is necessary for the seawater to _______________. a) boil b) condense c) evaporate d) freeze 8) Which of the following is not a function of the skeletal system? a) It supports the body. b) It enables the body to move. c) It protects delicate organs of the body. d) It transports food into the different parts of the body. 9) Which of the component of the skeletal system hold two bones together? a) tendon b) ligament c) cartilage d) joint 10) Which of these organs has voluntary muscles? a) arms b) esophagus c) heart d) lungs 11) Which part of the digestive system mechanically digests the food? a) stomach b) esophagus c) teeth d) intestine 12) What is the outermost layer of the skin? a) epidermis b) dermis c) hypodermis d) subcutaneous layer 13) Which of the following components of the circulatory system is known as soldiers of the body? a) red blood cells b) white blood cells c) platelets d) plasma 14) What is the longest bone in our body? a) femur b) pelvis c) ulna d) tibula 15) What are veins? a) Blood vessels that carry blood away from the heart b) Blood vessels that carry blood back to the heart c) Blood vessels that use to exchange gases d) none of the above 16) Kidney: Excretory ; Lungs:________________ a) Digestive b) Respiratory c) Skeletal d) Circulatory 17) Lungs: Carbon dioxide ; Skin: _______________ a) Sweat b) Blood c) Feces d) Urine 18) Bones: Calcium ; Muscles: _____________ a) Vitamin D b) Iron c) Protein d) Melanin 19) A colloid is a homogenous mixture. a) True b) False 20) Water is an element. a) True b) False

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