1) WHICH OF THE FOLLOWING IS TRUE ABOUT ATOM? a) SIZE OF ATOM IS SMALL b) CONSISTS OF THREE SUBATOMIC PARTICLES c) ATOM CAN BE SEEN BY NAKED EYES d) PERISCOPE IS USED TO SEE ATOM e) ELECTRON MICROSCOPE CAN BE USED TO SEE ATOM 2) WHICH OF THE FOLLOWING IS NON METAL? a) ZINC b) IODINE c) SILICONE d) COPPER e) HELIUM f) CARBON 3) WHAT IS THE METHOD USED TO SEPARATE THE SAND AND WATER? a) DISTILLATION b) FLOATATION c) SEDIMENTATION d) CHROMATOGRAPHY e) MAGNET f) ELECTROLYSIS 4) WHICH STATEMENT IS CORRECT ABOUT CHEMICCAL CHANGE? a) THE PROPERTIES OF SUBSTANCE AND PRODUCT ARE SAME b) PRODUCE NEW SUBSTANCE c) NO ENERGY CHANGE OCCUR d) MELTING OF ICE IS THE EXAMPLE OF CHEMICAL CHANGE 5) WHY IS ALUMINIUM CLASSIFIED AS METAL? a) DULL b) BRITTLE c) EASILIY BROKEN d) CAN BE SHAPED 6) WHICH OF THE FOLLOWING IS MIXTURE? a) SUGAR b) SALT c) COCTAIL d) PURE WATER e) SALAD f) COMBINATION OF SAND AND WATER IN A CONTAINER

PERIODIC TABLE

สั่งพิมพ์
ฝัง

ลีดเดอร์บอร์ด

สไตล์ภาพ

ตัวเลือก

สลับแม่แบบ

คืนค่าการบันทึกอัตโนมัติ: ใช่ไหม