Chemistry

What are atoms composed of?

• They are composed of particles called plasma, neutrons and electrons

• They are composed of particles called protons, neutrons and endocrine system

• They are composed of particles called protons, neutrons and electrons

• They are composed of particles called plasma, nano chips and electrons

How do you calculate density?

• Divide volume by volume

• Divide mass by volume

• Divide volume by mass

• Divide mass by mass

Name two metals that are both malleable and ductile

• Gold and silver

• Silver and copper

• Copper and gold

• Copper and iron

What’s the difference between endothermic and exothermic reactions?

• Endothermic: Absorbs wind.

  Exothermic: Releases wind.

• Endothermic: Absorbs water.

  Exothermic: Releases water.

• Endothermic: Releases heat.

  Exothermic: Absorbs heat.

• Endothermic: Absorbs heat.

  Exothermic: Releases heat.

Which state of matter has charged particles moving freely?

• Plasma

• Liquids

• Solid

• Gas

What are the ways we can seperate mixtures?

• Salt

• Filtration and evaporation

• Paper chromatography, Filtration and evaporation

• All of the above

Which of the choices has one element one compound and a mixture?

• Hydrogen, gold, mango juice

• Carbon, sodium chloride, blueberry jam

• Oxygen, copper, salt water

• Potassium, iron, egg scramble

Which one of these shows the four stages of matter?

• Solid, liquid, air, nature

• Gas, water, oil, softness

• Gas, plasma, liquid, solid

• Chlorine, nitrogen, solid, plasma

What is the difference between extensive and intensive properties?

• Intensive: no matter how much you have of the substance the property doesn't change

  Extensive: Doesn't changes due to the increase in amount

• Intensive: no matter how much you have of the substance the property doesn't change

  Extensive: changes due to the increase in amount

• Intensive: no matter how much you have of the substance the property does change

  Extensive: Doesn't changes due to the increase in amount

• None of the above

Which are examples of one physical and one chemical change?

• Luster and Fire

• Luster and Gold

• Luster and Weight

• None of the above