วิทยาศาสตร์กายภาพ

Name two types of variables used by scientists.

• Independent and dependant

• Relational and dependant

• Relational and independent

• Mathematical and relational

What is the first step of the scientific method?

• Analysis

• Question or problem

• Measuring

• Communicating results

What is the last step of the scientific method?

• Measuring

• Analyzing

• Communicating results.

• Drawing conclusions

The amount of energy required for a liquid at its boiling point to become a gas is _____________.

• heat of fusion

• heat of vaporization

• transpiration

• freezing point

Which of the following is a state of matter?

• particle

• thermal

• plasma

• diffuse

When a gas becomes a liquid it is called

• condensation

• evaporation

• sublimation

• freezing

A substance's ________________ is when it changes from a liquid to a gas

• boiling point

• melting point

• freezing point

• triangle point

A substance's ______________ is when it changes from a liquid to a solid

• melting point

• boiling point

• freezing point

• triangle point

if you have 18 protons, 18 electrons and 23 neutrons, which element is it?

What type of charge does a proton have?

• zero charge

• neutral

• negative

• positive