Paper 6 revision chemistry

What is the name of a positively charged ion?

• positron
• proton
• cation
• anion

What is the name of a negatively charged ion?

• negatron
• electron
• cation
• anion

A scientist has a hypothesis that the temperature at which a chicken’s egg is hatched will determine whether the chicken is male or female. The independent variable is:

• the incubator

• the temperature

• the female chicken

• the gender of the chicken

A scientist has a hypothesis that the temperature at which a chicken’s egg is hatched will determine whether the chicken is male or female. The dependent variable is:

• the incubator

• the temperature

• the size of the chicken

• the gender of the chicken

what is this

• basin

• gauze

• beaker

• evaporating basin/dish

A powder is placed into a bunsen burner flame. The colour of the flame is red. The ion is

• Na
• Li+
• Cu2+
• Ca

A powder is placed into a bunsen burner flame. The colour of the flame is orange. The ion is

• Na+
• Li+
• Ca2+
• K+

Silver nitrate and Nitric acid were mixed with an unknown solution. A cream ppt formed. The formula of the ion present is

• I-
• Br+
• Br-
• Cl+

Tags

NGSS.HS-PS1-1

NaOH is added to an unknown solution. A orange-brown ppt forms. The formula of the ion is:

• Fe2+
• Fe3+
• Cu2+
• Cl-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How do you test for carbon dioxide gas?

• Turns limewater milky
• Relights a glowing splint
• Makes a squeaky pop with a splint
• Bleaches damp litmus paper