If a person puts two teaspoons of sugar in a cup of coffee, what should the temperature of the coffee be to dissolve the sugar the fastest?

• 50°C

• 30°C

• 70°C

• 90°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which atoms are forming a gas?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-4

What does water, ice, and water vapor have in common?

• nothing

• They are made of the same compound.

• They are made of one element only.

• Nothing in common

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Which of the following is a solution?

• A salad

• Air

• Sandwich

• Pizza

Which of the following is a mixture?

• Air

• Kool-aid

• Chocolate milk

• Salad

How are mixtures and solutions alike?

• They are both easy to seperate.

• They are both solids.

• They have two or more ingredients.

• They are both liquids.

The smallest quantity of an element is

• Compund

• Mixture

• Atom

• Solution

A positively charged particle found in the nucleus of an atom.

• proton

• neutron

• electron

• nucleus

A particle found in the nucleus of an atom that has no charge.

• proton

• neutron

• electron

• nucleus

Directions: Which item is not a solution?

• chocolate milk

• orange juice from frozen concentrate

• Kool-aid

• ice cubes floating in a drink